CVE-2026-57438

MEDIUMNVD 6.66.6—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.6 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 98% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Trending — 3 sources updated this week
6.6EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.6Exploit: None knownExposed: 0

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

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, XInclude substitution performed by Nokogiri::XML::Node#do_xinclude replaced each in place, freeing the include node along with its children (such as and its descendants) and any namespaces declared on them. If an application had already exposed one of those nodes or namespaces to Ruby, the corresponding Ruby object was left pointing at freed memory. Using the object could result in invalid reads or writes to memory. This vulnerability is fixed in 1.19.4.

CVSS v3
6.6
EG Score
6.6(medium)
EG Risk
34(Track)
EG Risk 34/100SSVC: 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
Severity66% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

June 25, 2026

Last Modified

June 26, 2026

Advisory Details (1)

Auto-updated Jun 26, 2026
Patch available. Sources: github.
github Patch Available

Possible Use-After-Free in XInclude Processing · Advisory · sparklemotion/nokogiri · GitHub

https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-wfpw-mmfh-qq69

Vendor Advisories for CVE-2026-57438(1)

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

Affected Packages

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
ruby-nokogiri1.11.1+dfsg-2 ... 1.19.4+dfsg-1 (33 versions)——
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—
RubyGems(1)
PackageVulnerable rangeFixed inDependents
nokogiri1.0.0 ... 1.9.1 (194 versions)1.19.4—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 59× 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 111 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-57438?
CVE-2026-57438 is a medium vulnerability published on June 25, 2026. Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, XInclude substitution performed by Nokogiri::XML::Node#do_xinclude replaced each <xi:include> in place, freeing the include node along with its children (such as <xi:fallback> and its descendants)…
When was CVE-2026-57438 disclosed?
CVE-2026-57438 was first published in the National Vulnerability Database on June 25, 2026, with the most recent update on June 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-57438 actively exploited?
CVE-2026-57438 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 97.6% of all scored CVEs.
What is the CVSS score of CVE-2026-57438?
CVE-2026-57438 has a CVSS v3 base score of 6.6 (NVD).
How do I remediate CVE-2026-57438?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-57438, 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

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