CVE-2022-23307

HIGHPre-NVD 8.89.8▲
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-01-19. NVD baseline CVSS 8.8; sources differ by 1.0.

Triggered by: GitHub Security Advisory CVSS
Sources: ghsa, nvd
Elevated
8.8
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 52%
CISA-KEV: Not listedEPSS: 52%CVSS: 8.8Exploit: NoneExposed: 0

A fix is available — apply it.

CVE-2020-9493 identified a deserialization issue that was present in Apache Chainsaw. Prior to Chainsaw V2.0 Chainsaw was a component of Apache Log4j 1.2.x where the same issue exists.

CVSS v3
8.8
EG Score
9.8(medium)
EPSS
98.8%
KEV
Not listed

Published

January 18, 2022

Last Modified

May 27, 2026

Advisory Details (2)

Auto-updated May 22, 2026
No patch confirmed yet.
generic

Apache log4j 1.2 -

https://logging.apache.org/log4j/1.2/index.html
generic
https://lists.apache.org/thread/rg4yyc89vs3dw6kpy3r92xop9loywyhh

Vendor Advisories for CVE-2022-23307(20)

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

Patch Availability(23)

Vendor / EcosystemFixed in / PatchReleasedSource
redhateap7-xml-security-0:2.2.3-2.redhat_00001.1.el7eap2024-11-25redhat
redhateap7-log4j-jboss-logmanager-0:1.2.2-1.Final_redhat_00002.1.ep7.el72024-08-26redhat
redhatjbossweb-0:7.5.32-2.Final_redhat_1.2.ep6.el62022-06-30redhat
redhatpatch2022-06-30redhat
redhatjbossweb-0:7.5.32-2.Final_redhat_1.2.ep6.el72022-06-30redhat
redhateap7-log4j-0:2.17.1-1.redhat_00001.1.el7eap2022-04-11redhat
redhatlog4j2022-04-11redhat
redhateap7-log4j-0:2.17.1-1.redhat_00001.1.el8eap2022-04-11redhat
redhattomcat-native-0:1.2.23-26.redhat_26.ep7.el72022-02-14redhat
redhatlog4j-eap62022-02-14redhat
redhatpatch2022-02-08redhat
redhatsnmp4j-0:3.6.4-0.1.el8ev2022-02-08redhat
redhatrh-sso7-keycloak-0:15.0.4-1.redhat_00003.1.el8sso2022-02-07redhat
redhatlog4j-0:1.2.17-18.el7_42022-02-07redhat
redhatrh-sso-7/sso7-rhel8-operator-bundle:7.5.1-92022-02-07redhat
redhatrh-sso7-keycloak-0:15.0.4-1.redhat_00003.1.el7sso2022-02-07redhat
redhatrh-sso-7/sso74-openj9-openshift-rhel8:7.4-602022-02-07redhat
redhatrh-sso-7/sso74-openshift-rhel8:7.4-452022-02-07redhat
redhatrh-maven36-log4j12-0:1.2.17-23.4.el72022-02-03redhat
redhateap7-log4j-jboss-logmanager-0:1.2.2-1.Final_redhat_00002.1.el7eap2022-02-03redhat
redhatlog4j-jboss-logmanager-0:1.1.4-3.Final_redhat_00002.1.ep6.el72022-02-03redhat
mavenlog4j:log4j—ghsa
mavenorg.zenframework.z8.dependencies.commons:log4j-1.2.17—ghsa

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

(2 across 1 ecosystem)
Maven(2)
PackageVulnerable rangeFixed inDependents
log4j:log4j1.1.3 ... 1.2.9 (14 versions)——
org.zenframework.z8.dependencies.commons:log4j-1.2.172.0——

Weakness Classification(1)

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

Additional Vendor Advisories

(15)

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 5× in last 7d / 35× 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.

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

Frequently asked(5)

What is CVE-2022-23307?
CVE-2022-23307 is a high vulnerability published on January 18, 2022. CVE-2020-9493 identified a deserialization issue that was present in Apache Chainsaw. Prior to Chainsaw V2.0 Chainsaw was a component of Apache Log4j 1.2.x where the same issue exists.
When was CVE-2022-23307 disclosed?
CVE-2022-23307 was first published in the National Vulnerability Database on January 18, 2022, with the most recent update on May 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-23307 actively exploited?
CVE-2022-23307 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2022-23307?
CVE-2022-23307 has a CVSS v4.0 base score of 8.8 (CNA self-assessment; NVD's own analysis pending). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.8.
How do I remediate CVE-2022-23307?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-23307, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2022-23307

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