CVE-2026-79769

MEDIUMPre-NVD 5.55.5—
EchelonGraph scoreHIGH confidence

Score 5.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-25. a secondary CVSS source baseline 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Nokogiri versions before 1.19.4 contain a possible invalid (out-of-bounds) memory read in the protected internal Node#initialize_copy_with_args helper behind Node#dup and #clone, which unwrapped its source argument as an xmlNode without a type check. If application code calls this protected method with a non-Node argument (e.g., a Namespace), it reads an xmlNs out of bounds, crashing the process. This is only triggerable by a programming error and cannot be triggered by untrusted input or normal use of the public API. Only CRuby is affected. Version 1.19.4 adds a type check and raises TypeError.

CVSS v3
5.5
EG Score
5.5(high)
EG Risk
40(Track)
EG Risk 40/100SSVC: Track

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
Severity55% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
8%
KEV
Not listed

Published

August 25, 2026

Last Modified

August 26, 2026

Advisory Details (1)

Auto-updated Aug 25, 2026
Patch available. Sources: github.
github Patch Available

Possible invalid memory read when calling `Nokogiri::XML::Node#initialize_copy_with_args` with incorrect argument type · Advisory · sparklemotion/nokogiri · GitHub

https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-g9g8-vgvw-g3vf

Vendor Advisories for CVE-2026-79769(1)

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

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
ruby-nokogiri1.13.10+dfsg-2 ... 1.19.4+dfsg-1 (17 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
ruby-nokogiri1.18.10+dfsg-1 ... 1.19.4+dfsg-1 (7 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
ruby-nokogiri1.18.10+dfsg-1 ... 1.19.3+dfsg-1 (6 versions)1.19.4+dfsg-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 19× in last 7d / 69× 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. 2026-09-19 07:52 UTCEG score recompute
  2. 2026-09-19 07:52 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 07:23 UTCEG score recompute
  5. 2026-09-18 07:23 UTCGHSA enrichment
  6. 2026-09-17 06:53 UTCEG score recompute
  7. 2026-09-17 06:53 UTCGHSA enrichment
  8. 2026-09-16 14:08 UTCEPSS rescore
  9. 2026-09-16 06:11 UTCEG score recompute
  10. 2026-09-16 06:11 UTCGHSA enrichment
  11. 2026-09-16 05:15 UTCEPSS rescore
  12. 2026-09-15 05:41 UTCEG score recompute
  13. 2026-09-15 05:40 UTCGHSA enrichment
  14. 2026-09-15 03:12 UTCEPSS rescore
  15. 2026-09-15 03:12 UTCEPSS rescore
  16. 2026-09-14 04:15 UTCEG score recompute
  17. 2026-09-14 04:15 UTCGHSA enrichment
  18. 2026-09-13 03:46 UTCEG score recompute
  19. 2026-09-13 03:46 UTCGHSA enrichment
  20. 2026-09-12 03:16 UTCEG score recompute
  21. 2026-09-12 03:16 UTCGHSA enrichment
  22. 2026-09-11 14:53 UTCEPSS rescore
  23. 2026-09-11 14:53 UTCEPSS rescore
  24. 2026-09-11 02:46 UTCEG score recompute
  25. 2026-09-11 02:46 UTCGHSA enrichment
Show 44 more
  1. 2026-09-10 02:15 UTCGHSA enrichment
  2. 2026-09-09 01:45 UTCEG score recompute
  3. 2026-09-09 01:44 UTCGHSA enrichment
  4. 2026-09-08 22:01 UTCEPSS rescore
  5. 2026-09-08 01:14 UTCEG score recompute
  6. 2026-09-08 01:14 UTCGHSA enrichment
  7. 2026-09-07 00:45 UTCEG score recompute
  8. 2026-09-07 00:45 UTCGHSA enrichment
  9. 2026-09-06 13:48 UTCEPSS rescore
  10. 2026-09-06 00:13 UTCEG score recompute
  11. 2026-09-06 00:13 UTCGHSA enrichment
  12. 2026-09-04 23:41 UTCEG score recompute
  13. 2026-09-04 23:41 UTCGHSA enrichment
  14. 2026-09-04 05:07 UTCEPSS rescore
  15. 2026-09-03 22:14 UTCGHSA enrichment
  16. 2026-09-02 21:20 UTCEG score recompute
  17. 2026-09-02 21:20 UTCGHSA enrichment
  18. 2026-09-02 14:12 UTCEPSS rescore
  19. 2026-09-01 20:49 UTCEG score recompute
  20. 2026-09-01 20:49 UTCGHSA enrichment
  21. 2026-09-01 13:54 UTCEPSS rescore
  22. 2026-09-01 04:40 UTCEPSS rescore
  23. 2026-09-01 04:40 UTCEPSS rescore
  24. 2026-08-31 20:19 UTCGHSA enrichment
  25. 2026-08-30 19:49 UTCEG score recompute
  26. 2026-08-30 19:49 UTCGHSA enrichment
  27. 2026-08-30 19:18 UTCEPSS rescore
  28. 2026-08-30 19:17 UTCEPSS rescore
  29. 2026-08-30 01:22 UTCEPSS rescore
  30. 2026-08-29 19:19 UTCEG score recompute
  31. 2026-08-29 19:19 UTCGHSA enrichment
  32. 2026-08-28 21:42 UTCEPSS rescore
  33. 2026-08-28 18:47 UTCGHSA enrichment
  34. 2026-08-27 18:11 UTCEG score recompute
  35. 2026-08-27 18:11 UTCGHSA enrichment
  36. 2026-08-27 14:25 UTCEPSS rescore
  37. 2026-08-26 17:23 UTCEG score recompute
  38. 2026-08-26 17:23 UTCGHSA enrichment
  39. 2026-08-26 16:23 UTCEG score recompute
  40. 2026-08-26 16:23 UTCGHSA enrichment
  41. 2026-08-26 14:47 UTCEPSS rescore
  42. 2026-08-25 16:24 UTCEG score recompute
  43. 2026-08-25 15:30 UTCEG score recompute
  44. 2026-08-25 15:29 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-79769?
CVE-2026-79769 is a medium vulnerability published on August 25, 2026. Nokogiri versions before 1.19.4 contain a possible invalid (out-of-bounds) memory read in the protected internal Node#initializecopywith_args helper behind Node#dup and #clone, which unwrapped its source argument as an xmlNode without a type check. If application code calls this protected method…
When was CVE-2026-79769 disclosed?
CVE-2026-79769 was first published in the National Vulnerability Database on August 25, 2026, with the most recent update on August 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-79769 actively exploited?
CVE-2026-79769 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 92.1% of all scored CVEs.
What is the CVSS score of CVE-2026-79769?
CVE-2026-79769 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-79769?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-79769, 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-2026-79769

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