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 97% 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
6.6EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 6.6Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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
6.6MEDIUMmedium confidence
EG Risk
34
EG Risk 34/100

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
Severity66% × 45%
Exploitation0% × 40%
Automatability30% × 15%
EPSS PROB
0.1%
EPSS %ILE
1st
KEV
Not listed

Published

June 25, 2026

Last Modified

June 26, 2026

Advisory Details (1)

Auto-updated Jun 26, 2026
Patch available. Sources: github.
githubMentions a patch (unverified)

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 rangeFix by version rangeDependents
ruby-nokogiri1.11.1+dfsg-2 ... 1.19.4+dfsg-1 (33 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
ruby-nokogiri1.13.10+dfsg-2 ... 1.19.4+dfsg-1 (17 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
ruby-nokogiri1.18.10+dfsg-1 ... 1.19.4+dfsg-1 (7 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
ruby-nokogiri1.18.10+dfsg-1 ... 1.19.3+dfsg-1 (6 versions)
  • every version up to 1.19.4+dfsg-1: fixed in 1.19.4+dfsg-1
—
RubyGems(1)
PackageVulnerable rangeFix by version rangeDependents
nokogiri1.0.0 ... 1.9.1 (194 versions)
  • every version up to 1.19.4: fixed in 1.19.4
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 33× 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 158 total refreshes for this CVE.

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

Related CVEs(same product + same CWE)

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 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 0.1% probability of exploitation in the next 30 days (1st percentile of EPSS-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?
A fix for CVE-2026-57438 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-57438 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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