CVE-2026-12491

MEDIUMPre-NVD 4.84.8—
EchelonGraph scoreMEDIUM confidence

Score 4.8 from GitHub Security Advisory published 2026-06-17. a secondary CVSS source baseline 4.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
4.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.8Exploit: None knownExposed: 0

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

A flaw was found in vLLM, an open-source library for large language model inference. This vulnerability arises from improper handling of image metadata, specifically EXIF orientation and PNG transparency (tRNS) data, during image processing. When images are converted to RGB, transparency information may be implicitly discarded or remapped, leading to unexpected rendering of transparent pixels and distortion of input content. This can result in the model misinterpreting image content, potentially affecting the integrity of processed data.

CVSS v3
4.8
EG Score
4.8(medium)
EG Risk
22(Track)
EG Risk 22/100SSVC: 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
Severity48% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
15%
KEV
Not listed

Published

June 17, 2026

Last Modified

July 7, 2026

Advisory Details (2)

Auto-updated Jun 18, 2026
Patch available. Sources: redhat.
redhat

2489786 – (CVE-2026-12491) CVE-2026-12491 vllm: vllm: image EXIF Rotation & PNG tRNS Transparency Not Normalized, Causing Mismatch Between Model Input and Expectations

https://bugzilla.redhat.com/show_bug.cgi?id=2489786
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-12491

Vendor Advisories for CVE-2026-12491(1)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
pipvllm—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

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
vllm0.11.0 ... 0.23.0 (23 versions)0.24.0—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 51× 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 132 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-12491?
CVE-2026-12491 is a medium vulnerability published on June 17, 2026. A flaw was found in vLLM, an open-source library for large language model inference. This vulnerability arises from improper handling of image metadata, specifically EXIF orientation and PNG transparency (tRNS) data, during image processing. When images are converted to RGB, transparency…
When was CVE-2026-12491 disclosed?
CVE-2026-12491 was first published in the National Vulnerability Database on June 17, 2026, with the most recent update on July 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12491 actively exploited?
CVE-2026-12491 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 85.3% of all scored CVEs.
What is the CVSS score of CVE-2026-12491?
CVE-2026-12491 has a CVSS v3 base score of 4.8 (NVD).
How do I remediate CVE-2026-12491?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-12491, 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-2026-12491

Explore →

Is Your Infrastructure Affected by CVE-2026-12491?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs