CVE-2026-4367

MEDIUMPre-NVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-06-16. a secondary CVSS source baseline 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 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

A fix is available — apply it.

A flaw was found in libXpm. A local user with low privileges could exploit an Out-of-Bounds Read vulnerability in the xpmNextWord() function by processing a specially crafted or very small XPM (X PixMap) image file. This improper validation of file boundaries can cause an internal pointer to read beyond the file's end, leading to application crashes and Denial of Service conditions.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
25(Track)
EG Risk 25/100SSVC: 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%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

June 16, 2026

Last Modified

July 28, 2026

Advisory Details (5)

Auto-updated Jun 16, 2026
Patch available. Sources: redhat.
generic

oss-security - Fwd: X.Org Security Advisory: CVE-2026-4367: libXpm Out-of-bounds read in xpmNextWord()

http://www.openwall.com/lists/oss-security/2026/04/21/3
generic

oss-sec: Fwd: X.Org Security Advisory: CVE-2026-4367: libXpm Out-of-bounds read in xpmNextWord()

https://seclists.org/oss-sec/2026/q2/192
generic

Fix CVE-2026-4367: Out-of-bounds read in xpmNextWord() (5448e1bd) · Commits · xorg / lib / libXpm · GitLab

https://gitlab.freedesktop.org/xorg/lib/libxpm/-/commit/5448e1bd
redhat

2448984 – (CVE-2026-4367) CVE-2026-4367 libXpm: libXpm: Denial of Service via out-of-bounds read in XPM file parsing

https://bugzilla.redhat.com/show_bug.cgi?id=2448984
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-4367

Vendor Advisories for CVE-2026-4367(4)

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

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuxpmutils (1:3.5.17-1ubuntu0.24.04.1) @ noble2026-08-24ubuntu
redhatlibxpm-main-3.5.19-4.hum12026-07-28redhat
redhatlibxpm-main-3.5.17-7.2.hum12026-06-26redhat

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

(9 across 9 ecosystems)
Alpine:v3.20(1)
PackageVulnerable rangeFixed inDependents
libxpm—3.5.19-r0—
Alpine:v3.21(1)
PackageVulnerable rangeFixed inDependents
libxpm—3.5.19-r0—
Alpine:v3.22(1)
PackageVulnerable rangeFixed inDependents
libxpm—3.5.19-r0—
Alpine:v3.23(1)
PackageVulnerable rangeFixed inDependents
libxpm—3.5.19-r0—
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
libxpm—3.5.19-r0—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
libxpm1:3.5.12-1 ... 1:3.5.19-1 (6 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
libxpm1:3.5.12-1.1, 1:3.5.12-1.1+deb12u1, 1:3.5.17-1, 1:3.5.19-1——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
libxpm1:3.5.17-11:3.5.17-1+deb13u1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libxpm1:3.5.17-11:3.5.19-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

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 9× in last 7d / 85× 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 201 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-4367?
CVE-2026-4367 is a medium vulnerability published on June 16, 2026. A flaw was found in libXpm. A local user with low privileges could exploit an Out-of-Bounds Read vulnerability in the xpmNextWord() function by processing a specially crafted or very small XPM (X PixMap) image file. This improper validation of file boundaries can cause an internal pointer to read…
When was CVE-2026-4367 disclosed?
CVE-2026-4367 was first published in the National Vulnerability Database on June 16, 2026, with the most recent update on July 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-4367 actively exploited?
CVE-2026-4367 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 97.2% of all scored CVEs.
What is the CVSS score of CVE-2026-4367?
CVE-2026-4367 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-4367?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-4367, 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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