CVE-2015-20107

CRITICALNVD 7.69.8▲
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-04-14. NVD baseline CVSS 7.6; sources differ by 2.2.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2.8%CVSS: 7.6Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

In Python (aka CPython) up to 3.10.8, the mailcap module does not add escape characters into commands discovered in the system mailcap file. This may allow attackers to inject shell commands into applications that call mailcap.findmatch with untrusted input (if they lack validation of user-provided filenames or arguments). The fix is also back-ported to 3.7, 3.8, 3.9

CVSS v3
7.6
EG Score
9.8CRITICALmedium confidence
EG Risk
47
EG Risk 47/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation7% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
2.8%
EPSS %ILE
85th
KEV
Not listed

CISA SSVCTrack 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 (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

April 13, 2022

Last Modified

October 8, 2026

Advisory Details (10)

Auto-updated Oct 8, 2026
Patch available.
generic

[SECURITY] Fedora 36 Update: python3.8-3.8.13-3.fc36 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y4E2WBEJ42CGLGDHD6ZXOLZ2W6G3YOVD/
generic

[SECURITY] Fedora 35 Update: python3.9-3.9.13-2.fc35 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MYG3EMFR7ZHC46TDNM7SNWO64A3W7EUF/
generic

[SECURITY] Fedora 35 Update: python3.7-3.7.13-2.fc35 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ONXSGLASNLGFL57YU6WT6Y5YURSFV43U/
generic

[SECURITY] Fedora 36 Update: python3.6-3.6.15-9.fc36 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/46KWPTI72SSEOF53DOYQBQOCN4QQB2GE/
generic

[SECURITY] Fedora 35 Update: python3.8-3.8.13-3.fc35 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FIRUTX47BJD2HYJDLMI7JJBVCYFAPKAQ/
generic

[SECURITY] Fedora 35 Update: python3.6-3.6.15-3.fc35 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ERYMM2QVDPOJLX4LYXWYIQN5FOIJLDRY/
generic

[SECURITY] Fedora 36 Update: python3.9-3.9.13-2.fc36 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FCIO2W4DUVVMI6L52QCC4TT2B3K5VWHS/
generic

NetApp Product Security

https://security.netapp.com/advisory/ntap-20220616-0001/
generic

[CVE-2015-20107] mailcap.findmatch: document shell command Injection danger in filename parameter · Issue #68966 · python/cpython · GitHub

https://github.com/python/cpython/issues/68966
generic

Issue 24778: [CVE-2015-20107] mailcap.findmatch: document shell command Injection danger in filename parameter - Python tracker

https://bugs.python.org/issue24778

Vendor Advisories for CVE-2015-20107(7)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(9)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntupython3.9 (3.9.5-3ubuntu0~20.04.1+esm1) @ focal2026-05-25ubuntu
ubuntulibpython3.5 (3.5.2-2ubuntu0~16.04.13+esm3) @ xenial2026-05-25ubuntu
ubuntupython3.11-venv (3.11.0~rc1-1~22.04.1~esm1) @ jammy2026-05-25ubuntu
redhatpython3.9-0:3.9.14-1.el92022-11-15redhat
redhatpython39-devel:3.9-8070020220916150556.be1f04972022-11-08redhat
redhatpython38-devel:3.8-8070020220916150349.bd194b042022-11-08redhat
redhatpython27:2.7-8070020220617114255.056aacbc2022-11-08redhat
redhatrh-python38-python-0:3.8.14-1.el72022-10-03redhat
redhatpython3-0:3.6.8-47.el8_62022-09-13redhat

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

(16 across 13 ecosystems)
Debian:11(3)
PackageVulnerable rangeFix by version rangeDependents
pypy37.3.10+dfsg-1 ... 7.3.9+dfsg-5 (53 versions)
  • every version on: no fix on record
—
python2.72.7.18-10 ... 2.7.18-9 (10 versions)
  • every version on: no fix on record
—
python3.93.9.2-1, 3.9.2-1+deb11u1
  • every version up to 3.9.2-1+deb11u2: fixed in 3.9.2-1+deb11u2
—
Debian:10(2)
PackageVulnerable rangeFix by version rangeDependents
python2.72.7.16-2, 2.7.16-2+deb10u1
  • every version up to 2.7.16-2+deb10u2: fixed in 2.7.16-2+deb10u2
—
python3.73.7.3-2, 3.7.3-2+deb10u1, 3.7.3-2+deb10u2, 3.7.3-2+deb10u3, 3.7.3-2+deb10u4
  • every version up to 3.7.3-2+deb10u5: fixed in 3.7.3-2+deb10u5
—
Alpine:v3.17(1)
PackageVulnerable rangeFix by version rangeDependents
python3—
  • every version up to 3.10.5-r0: fixed in 3.10.5-r0
—
Alpine:v3.18(1)
PackageVulnerable rangeFix by version rangeDependents
python3—
  • every version up to 3.10.5-r0: fixed in 3.10.5-r0
—
Alpine:v3.19(1)
PackageVulnerable rangeFix by version rangeDependents
python3—
  • every version up to 3.10.5-r0: fixed in 3.10.5-r0
—
Alpine:v3.20(1)
PackageVulnerable rangeFix by version rangeDependents
python3—
  • every version up to 3.10.5-r0: fixed in 3.10.5-r0
—
Alpine:v3.21(1)
PackageVulnerable rangeFix by version rangeDependents
python3—
  • every version up to 3.10.5-r0: fixed in 3.10.5-r0
—
Alpine:v3.22(1)
PackageVulnerable rangeFix by version rangeDependents
python3—
  • every version up to 3.10.5-r0: fixed in 3.10.5-r0
—
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
python3—
  • every version up to 3.10.5-r0: fixed in 3.10.5-r0
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
python3—
  • every version up to 3.10.5-r0: fixed in 3.10.5-r0
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
pypy3—
  • every version up to 7.3.11+dfsg-1: fixed in 7.3.11+dfsg-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
pypy3—
  • every version up to 7.3.11+dfsg-1: fixed in 7.3.11+dfsg-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
pypy3—
  • every version up to 7.3.11+dfsg-1: fixed in 7.3.11+dfsg-1
—

Weakness Classification(1)

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

Additional Vendor Advisories

(3)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 11× in last 7d / 26× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 148 total refreshes for this CVE.

  1. 2026-10-09 20:01 UTCEPSS rescore
  2. 2026-10-08 16:35 UTCEPSS rescore
  3. 2026-10-08 01:33 UTCVendor advisory
  4. 2026-10-08 01:33 UTCGHSA enrichment
  5. 2026-10-08 01:04 UTCEG score recompute
  6. 2026-10-08 01:04 UTCVendor advisory
  7. 2026-10-08 01:04 UTCGHSA enrichment
  8. 2026-10-07 23:40 UTCEPSS rescore
  9. 2026-10-06 15:11 UTCEPSS rescore
  10. 2026-10-05 17:38 UTCEPSS rescore
  11. 2026-10-03 14:21 UTCEPSS rescore
  12. 2026-10-01 19:43 UTCEPSS rescore
  13. 2026-09-30 14:58 UTCEPSS rescore
  14. 2026-09-30 09:02 UTCEG score recompute
  15. 2026-09-28 13:45 UTCEPSS rescore
  16. 2026-09-27 13:40 UTCEPSS rescore
  17. 2026-09-27 13:40 UTCEPSS rescore
  18. 2026-09-26 15:53 UTCEPSS rescore
  19. 2026-09-25 01:24 UTCOSV refresh
  20. 2026-09-19 15:35 UTCEPSS rescore
  21. 2026-09-18 19:22 UTCEPSS rescore
  22. 2026-09-17 19:21 UTCEPSS rescore
  23. 2026-09-15 03:05 UTCEPSS rescore
  24. 2026-09-12 14:55 UTCEPSS rescore
  25. 2026-09-11 09:31 UTCEPSS rescore
Show 75 more
  1. 2026-09-10 09:26 UTCEPSS rescore
  2. 2026-09-07 15:56 UTCEPSS rescore
  3. 2026-09-06 13:42 UTCEPSS rescore
  4. 2026-09-05 16:51 UTCOSV refresh
  5. 2026-09-05 15:23 UTCEPSS rescore
  6. 2026-09-04 13:55 UTCEPSS rescore
  7. 2026-09-02 14:07 UTCEPSS rescore
  8. 2026-09-01 03:31 UTCEPSS rescore
  9. 2026-08-30 19:12 UTCEPSS rescore
  10. 2026-08-27 14:20 UTCEPSS rescore
  11. 2026-08-26 14:41 UTCEPSS rescore
  12. 2026-08-25 13:44 UTCEPSS rescore
  13. 2026-08-21 23:44 UTCEPSS rescore
  14. 2026-08-20 22:50 UTCEPSS rescore
  15. 2026-08-19 16:59 UTCEPSS rescore
  16. 2026-08-19 03:29 UTCOSV refresh
  17. 2026-08-18 13:43 UTCEPSS rescore
  18. 2026-08-16 14:51 UTCEPSS rescore
  19. 2026-08-16 02:09 UTCEPSS rescore
  20. 2026-08-15 01:25 UTCEPSS rescore
  21. 2026-08-12 13:46 UTCEPSS rescore
  22. 2026-08-08 16:31 UTCEPSS rescore
  23. 2026-08-07 16:22 UTCEPSS rescore
  24. 2026-08-06 13:42 UTCEPSS rescore
  25. 2026-08-05 19:12 UTCEPSS rescore
  26. 2026-08-04 15:04 UTCEPSS rescore
  27. 2026-08-03 22:57 UTCOSV refresh
  28. 2026-08-02 02:22 UTCEPSS rescore
  29. 2026-08-01 04:11 UTCEPSS rescore
  30. 2026-07-30 16:23 UTCEPSS rescore
  31. 2026-07-30 01:26 UTCEPSS rescore
  32. 2026-07-28 15:31 UTCEPSS rescore
  33. 2026-07-24 14:13 UTCEPSS rescore
  34. 2026-07-23 14:14 UTCEPSS rescore
  35. 2026-07-23 01:16 UTCEG score recompute
  36. 2026-07-23 00:19 UTCEG score recompute
  37. 2026-07-22 21:57 UTCEG score recompute
  38. 2026-07-22 14:04 UTCEPSS rescore
  39. 2026-07-21 15:21 UTCEPSS rescore
  40. 2026-07-21 15:21 UTCEPSS rescore
  41. 2026-07-20 17:03 UTCEPSS rescore
  42. 2026-07-19 14:27 UTCEPSS rescore
  43. 2026-07-19 14:27 UTCEPSS rescore
  44. 2026-07-19 02:26 UTCEPSS rescore
  45. 2026-07-19 02:26 UTCEPSS rescore
  46. 2026-07-18 10:00 UTCEPSS rescore
  47. 2026-07-17 15:59 UTCOSV refresh
  48. 2026-07-16 16:59 UTCEPSS rescore
  49. 2026-07-16 16:59 UTCEPSS rescore
  50. 2026-07-15 16:54 UTCEPSS rescore
  51. 2026-07-15 16:54 UTCEPSS rescore
  52. 2026-07-15 01:56 UTCEPSS rescore
  53. 2026-07-13 22:26 UTCEPSS rescore
  54. 2026-07-12 05:42 UTCEPSS rescore
  55. 2026-07-11 08:23 UTCEPSS rescore
  56. 2026-07-09 19:05 UTCEPSS rescore
  57. 2026-07-08 15:10 UTCEPSS rescore
  58. 2026-07-07 13:42 UTCEPSS rescore
  59. 2026-07-06 16:24 UTCEPSS rescore
  60. 2026-07-06 02:20 UTCEPSS rescore
  61. 2026-07-05 02:26 UTCEPSS rescore
  62. 2026-07-04 06:27 UTCEPSS rescore
  63. 2026-07-02 15:21 UTCEPSS rescore
  64. 2026-07-01 15:02 UTCEPSS rescore
  65. 2026-07-01 15:02 UTCEPSS rescore
  66. 2026-06-30 23:19 UTCEPSS rescore
  67. 2026-06-30 23:19 UTCEPSS rescore
  68. 2026-06-29 14:02 UTCOSV refresh
  69. 2026-06-28 14:03 UTCEPSS rescore
  70. 2026-06-28 04:53 UTCEPSS rescore
  71. 2026-06-27 03:05 UTCEPSS rescore
  72. 2026-06-25 13:47 UTCEPSS rescore
  73. 2026-06-25 13:47 UTCEPSS rescore
  74. 2026-06-24 14:02 UTCEPSS rescore
  75. 2026-06-24 14:02 UTCEPSS rescore

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2015-20107?
CVE-2015-20107 is a critical vulnerability published on April 13, 2022. In Python (aka CPython) up to 3.10.8, the mailcap module does not add escape characters into commands discovered in the system mailcap file. This may allow attackers to inject shell commands into applications that call mailcap.findmatch with untrusted input (if they lack validation of user-provided…
When was CVE-2015-20107 disclosed?
CVE-2015-20107 was first published on April 13, 2022, with the most recent update on October 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2015-20107 actively exploited?
CVE-2015-20107 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.8% probability of exploitation in the next 30 days (85th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2015-20107?
CVE-2015-20107 has a CVSS v3 base score of 7.6 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.8 (CRITICAL).
How do I remediate CVE-2015-20107?
A fix for CVE-2015-20107 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2015-20107 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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