CVE-2017-7481

CRITICALNVD 9.89.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 4.8% (91st percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 4.8%CVSS: 9.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Ansible before versions 2.3.1.0 and 2.4.0.0 fails to properly mark lookup-plugin results as unsafe. If an attacker could control the results of lookup() calls, they could inject Unicode strings to be parsed by the jinja2 templating system, resulting in code execution. By default, the jinja2 templating language is now marked as 'unsafe' and is not evaluated.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
46
EG Risk 46/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity98% × 45%
Impact severity (EG Severity): CVSS 9.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation4.8% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's BOD 26-04 default: no one has published Automatable for this CVE, and CISA treats it as “no” for a CVE not in KEV.
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
4.8%
EPSS %ILE
91st
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (9.8): severity, escalated by confirmed exploitation. This CVE's 9.8 is its impact severity (EG Severity), not escalated.

EG Severity
9.8 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
4.8% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-22). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 19, 2018

Last Modified

November 21, 2024

Advisory Details (10)

Auto-updated Oct 7, 2026
Patch available. Sources: redhat, github_commit.
Web pageMentions a patch (unverified)

[SECURITY] [DLA 2535-1] ansible security update

https://lists.debian.org/debian-lts-announce/2021/01/msg00023.html
GitHub commit Patch Available

commit ed56f51f185a (ansible/ansible)

Patch available: ansible/ansible v2.21.1rc1 (contains commit ed56f51f185a)

https://github.com/ansible/ansible/commit/ed56f51f185a1ffd7ea57130d260098686fcc7c2
Red HatMentions a patch (unverified)

1450018 – (CVE-2017-7481) CVE-2017-7481 ansible: Security issue with lookup return not tainting the jinja2 environment

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7481
Red HatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2017:2524
Red HatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2017:1599
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 7.

https://access.redhat.com/errata/RHSA-2017:1499
Red HatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2017:1476
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 7.

https://access.redhat.com/errata/RHSA-2017:1334
Red HatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2017:1244
Web page

CVE-2017-7481 - PSIRT.COM

http://www.securityfocus.com/bid/98492

Patch Availability(4)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntuansible-node-fireball (2.0.0.2-2ubuntu1.3) @ xenial2026-10-21ubuntu
redhatansible-0:2.3.1.0-3.el72017-08-22redhat
redhatansible-0:2.2.3.0-1.el72017-06-28redhat
redhatopenshift-ansible-0:3.5.71-1.git.0.128c2db.el72017-05-17redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(6 across 6 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
ansible—
  • every version up to 2.3.1.0+dfsg-1: fixed in 2.3.1.0+dfsg-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
ansible—
  • every version up to 2.3.1.0+dfsg-1: fixed in 2.3.1.0+dfsg-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
ansible—
  • every version up to 2.3.1.0+dfsg-1: fixed in 2.3.1.0+dfsg-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
ansible—
  • every version up to 2.3.1.0+dfsg-1: fixed in 2.3.1.0+dfsg-1
—
Debian:9(1)
PackageVulnerable rangeFix by version rangeDependents
ansible2.2.1.0-2, 2.2.1.0-2+deb9u1
  • every version up to 2.2.1.0-2+deb9u2: fixed in 2.2.1.0-2+deb9u2
—
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
ansible1.0 ... 2.3.3.0 (70 versions)
  • 2.3.0.0 up to 2.3.1.0: fixed in 2.3.1.0
  • every version up to 2.1.6.0: fixed in 2.1.6.0
  • 2.2.0.0 up to 2.2.3.0: fixed in 2.2.3.0
  • every version up to 2.3.1.0: fixed in 2.3.1.0
  • 2.3.2.0 up to 2.4.0.0: fixed in 2.4.0.0
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(7)

Data Freshness Timeline

(refreshed 19× in last 7d / 48× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 93 of 182 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 7 repeat rows among the latest 100 are merged into the row they repeat. The 89 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-22 17:55 UTCEG score recompute
  2. 2026-10-22 17:55 UTCVendor advisory
  3. 2026-10-22 16:27 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  4. 2026-10-21 16:27 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  5. 2026-10-21 15:57 UTCEG score recompute
  6. 2026-10-21 15:57 UTCVendor advisory
  7. 2026-10-20 16:27 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  8. 2026-10-20 14:04 UTCEG score recompute
  9. 2026-10-20 14:04 UTCVendor advisory
  10. 2026-10-19 16:26 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  11. 2026-10-19 12:08 UTCEG score recompute
  12. 2026-10-19 12:08 UTCVendor advisory
  13. 2026-10-18 16:27 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  14. 2026-10-18 10:11 UTCEG score recompute
  15. 2026-10-18 10:11 UTCVendor advisory
  16. 2026-10-17 16:27 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  17. 2026-10-17 08:15 UTCEG score recompute
  18. 2026-10-17 08:15 UTCVendor advisory
  19. 2026-10-16 16:29 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  20. 2026-10-16 06:20 UTCEG score recompute
  21. 2026-10-16 06:20 UTCVendor advisory
  22. 2026-10-15 16:27 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  23. 2026-10-15 04:23 UTCEG score recompute
  24. 2026-10-15 04:23 UTCVendor advisory
  25. 2026-10-14 16:27 UTCEPSS rescoreEPSS 4.8% · 91st percentile
Show 68 more
  1. 2026-10-14 00:20 UTCEG score recompute
  2. 2026-10-14 00:20 UTCVendor advisory
  3. 2026-10-13 16:27 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  4. 2026-10-12 20:27 UTCVendor advisory
  5. 2026-10-12 20:26 UTCEG score recompute
  6. 2026-10-12 16:28 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  7. 2026-10-12 00:49 UTCEG score recompute
  8. 2026-10-11 13:41 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  9. 2026-10-10 19:55 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  10. 2026-10-09 20:02 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  11. 2026-10-09 06:25 UTCOSV refresh
  12. 2026-10-08 16:36 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  13. 2026-10-07 23:41 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  14. 2026-10-06 15:12 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  15. 2026-10-05 17:39 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  16. 2026-10-03 14:21 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  17. 2026-09-30 14:59 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  18. 2026-09-30 09:40 UTCEG score recompute
  19. 2026-09-28 13:45 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  20. 2026-09-27 13:40 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  21. 2026-09-26 15:53 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  22. 2026-09-26 00:19 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  23. 2026-09-24 13:59 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  24. 2026-09-23 13:42 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  25. 2026-09-21 20:27 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  26. 2026-09-20 20:09 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  27. 2026-09-19 15:36 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  28. 2026-09-19 13:02 UTCOSV refresh
  29. 2026-09-17 19:22 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  30. 2026-09-15 03:05 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  31. 2026-09-12 14:56 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  32. 2026-09-11 09:31 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  33. 2026-09-07 15:56 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  34. 2026-09-05 15:24 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  35. 2026-09-04 13:56 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  36. 2026-09-04 05:02 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  37. 2026-09-02 14:07 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  38. 2026-09-01 03:31 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  39. 2026-08-31 16:34 UTCOSV refresh
  40. 2026-08-30 19:13 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  41. 2026-08-28 21:36 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  42. 2026-08-27 14:21 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  43. 2026-08-26 14:41 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  44. 2026-08-25 13:44 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  45. 2026-08-23 00:14 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  46. 2026-08-21 23:44 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  47. 2026-08-19 16:59 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  48. 2026-08-18 13:43 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  49. 2026-08-16 14:51 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  50. 2026-08-16 02:10 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  51. 2026-08-15 01:26 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  52. 2026-08-14 21:24 UTCOSV refresh
  53. 2026-08-12 13:46 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  54. 2026-08-09 13:42 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  55. 2026-08-08 16:32 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  56. 2026-08-07 16:22 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  57. 2026-08-06 13:42 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  58. 2026-08-05 19:13 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  59. 2026-08-02 02:23 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  60. 2026-08-01 04:12 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  61. 2026-07-30 16:24 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  62. 2026-07-30 10:14 UTCOSV refresh
  63. 2026-07-30 01:26 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  64. 2026-07-28 15:32 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  65. 2026-07-26 14:51 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  66. 2026-07-23 14:15 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  67. 2026-07-23 01:30 UTCEG score recompute
  68. 2026-07-22 22:10 UTCEG score recompute

Frequently asked(5)

What is CVE-2017-7481?
CVE-2017-7481 is a critical-severity vulnerability; its CVE record was published on July 19, 2018. Ansible before versions 2.3.1.0 and 2.4.0.0 fails to properly mark lookup-plugin results as unsafe. If an attacker could control the results of lookup() calls, they could inject Unicode strings to be parsed by the jinja2 templating system, resulting in code execution. By default, the jinja2…
When was CVE-2017-7481 made public?
CVE-2017-7481 was made public on May 9, 2017: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on July 19, 2018. EchelonGraph's copy of the record carries a last-modified date of November 21, 2024; the record at its source may have been updated since.
Is CVE-2017-7481 actively exploited?
CVE-2017-7481 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4.8% probability of exploitation in the next 30 days (91st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2017-7481?
CVE-2017-7481 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2017-7481?
A fix for CVE-2017-7481 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2017-7481

Explore →

Is Your Infrastructure Affected by CVE-2017-7481?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.