CVE-2026-77310

MEDIUMPre-NVD 5.35.3
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3% (22nd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
5.3EG
EchelonGraph verdictMonitorRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 5.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. Prior to versions 2.18.9, 2.21.5, 2.22.1, 3.1.5, and 3.2.1 on their respective release lines, the java.net.InetAddress branch of FromStringDeserializer.Std._deserialize() calls InetAddress.getByName() on attacker-controlled input, causing eager DNS resolution during deserialization and enabling DNS-based server-side request forgery and internal-host enumeration. This issue is fixed in versions 2.18.9, 2.21.5, 2.22.1, 3.1.5, and 3.2.1.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
39
EG Risk 39/100

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 (value × EchelonGraph’s weight)
Severity53% × 45%
The EG Score, 5.3 of 10.
Exploitation0.3% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
0.3%
EPSS %ILE
22nd
KEV
Not listed

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

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (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; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). 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

August 24, 2026

Last Modified

October 12, 2026

Advisory Details (1)

Auto-updated Aug 24, 2026
Patch available. Sources: github.
GitHub advisoryMentions a patch (unverified)

Incomplete fix for CVE-2026-54514: eager DNS resolution (SSRF) still present in InetAddress deserialization (sibling of the patched InetSocketAddress branch) · Advisory · FasterXML/jackson-databind · GitHub

https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-vvgp-rfg2-7rr6

Vendor Advisories for CVE-2026-77310(1)

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

Affected Packages

(2 across 1 ecosystem)
Maven(2)
PackageVulnerable rangeFix by version rangeDependents
com.fasterxml.jackson.core:jackson-databind2.22.0
  • 2.0.0 up to 2.18.9: fixed in 2.18.9
  • 2.19.0 up to 2.21.5: fixed in 2.21.5
  • 2.22.0 up to 2.22.1: fixed in 2.22.1
—
tools.jackson.core:jackson-databind3.2.0
  • 3.0.0 up to 3.1.5: fixed in 3.1.5
  • 3.2.0 up to 3.2.1: fixed in 3.2.1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 15× in last 7d / 53× 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.

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. 2 repeat rows among the latest 93 are merged into the row they repeat.

  1. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  2. 2026-10-12 21:27 UTCEG score recompute
  3. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  4. 2026-10-12 15:37 UTCEG score recompute
  5. 2026-10-11 19:23 UTCEG score recompute
  6. 2026-10-11 16:39 UTCEG score recompute
  7. 2026-10-11 13:58 UTCEG score recompute
  8. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  9. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  10. 2026-10-10 12:31 UTCEG score recompute
  11. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  12. 2026-10-09 04:42 UTCEG score recompute
  13. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  14. 2026-10-08 03:50 UTCEG score recompute
  15. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  16. 2026-10-07 01:19 UTCEG score recompute
  17. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  18. 2026-10-06 02:47 UTCEG score recompute
  19. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  20. 2026-10-04 03:47 UTCEG score recompute
  21. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  22. 2026-10-03 05:15 UTCEG score recompute
  23. 2026-10-02 06:42 UTCEG score recompute
  24. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  25. 2026-10-01 05:37 UTCEG score recompute
Show 66 more
  1. 2026-09-30 06:59 UTCEG score recompute
  2. 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  3. 2026-09-28 21:32 UTCEG score recompute
  4. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  5. 2026-09-27 20:51 UTCEG score recompute
  6. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  7. 2026-09-26 22:18 UTCEG score recompute
  8. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  9. 2026-09-26 00:28 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  10. 2026-09-24 22:17 UTCEG score recompute
  11. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  12. 2026-09-23 01:10 UTCEG score recompute
  13. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  14. 2026-09-22 02:37 UTCEG score recompute
  15. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  16. 2026-09-21 04:03 UTCEG score recompute
  17. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  18. 2026-09-20 05:29 UTCEG score recompute
  19. 2026-09-19 06:56 UTCEG score recompute
  20. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  21. 2026-09-18 08:24 UTCEG score recompute
  22. 2026-09-17 09:48 UTCEG score recompute
  23. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  24. 2026-09-16 11:15 UTCEG score recompute
  25. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  26. 2026-09-15 12:42 UTCEG score recompute
  27. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  28. 2026-09-14 14:01 UTCEG score recompute
  29. 2026-09-12 16:56 UTCEG score recompute
  30. 2026-09-12 15:02 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  31. 2026-09-11 18:23 UTCEG score recompute
  32. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  33. 2026-09-10 19:50 UTCEG score recompute
  34. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  35. 2026-09-09 01:21 UTCEG score recompute
  36. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  37. 2026-09-08 01:53 UTCEG score recompute
  38. 2026-09-07 03:20 UTCEG score recompute
  39. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  40. 2026-09-06 04:41 UTCEG score recompute
  41. 2026-09-05 06:08 UTCEG score recompute
  42. 2026-09-04 07:35 UTCEG score recompute
  43. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  44. 2026-09-03 09:02 UTCEG score recompute
  45. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  46. 2026-09-02 10:29 UTCEG score recompute
  47. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  48. 2026-09-01 11:50 UTCEG score recompute
  49. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  50. 2026-08-31 13:18 UTCEG score recompute
  51. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  52. 2026-08-30 14:39 UTCEG score recompute
  53. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  54. 2026-08-29 16:04 UTCEG score recompute
  55. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  56. 2026-08-27 18:14 UTCEG score recompute
  57. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  58. 2026-08-26 19:08 UTCEG score recompute
  59. 2026-08-26 14:47 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  60. 2026-08-25 20:35 UTCEG score recompute
  61. 2026-08-25 19:37 UTCEG score recompute
  62. 2026-08-25 18:58 UTCEG score recompute
  63. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  64. 2026-08-24 20:25 UTCEG score recompute
  65. 2026-08-24 19:36 UTCEG score recomputeFirst assessed: 5.3 MEDIUM
  66. 2026-08-24 19:36 UTCMITRE cvelistV5first tracked

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-77310?
CVE-2026-77310 is a medium-severity vulnerability; its CVE record was published on August 24, 2026. jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. Prior to versions 2.18.9, 2.21.5, 2.22.1, 3.1.5, and 3.2.1 on their respective release lines, the java.net.InetAddress branch of FromStringDeserializer.Std._deserialize() calls…
When was the CVE record for CVE-2026-77310 published?
The CVE record for CVE-2026-77310 was published on August 24, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 12, 2026; the record at its source may have been updated since.
Is CVE-2026-77310 actively exploited?
CVE-2026-77310 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (22nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-77310?
CVE-2026-77310 has a CVSS base score of 5.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-77310?
A fix for CVE-2026-77310 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-77310 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-77310

Explore →

Is Your Infrastructure Affected by CVE-2026-77310?

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

Book a Demo →Browse All CVEs