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: 0.2%CVSS: 4.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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
4.8MEDIUMmedium confidence
EG Risk
22
EG Risk 22/100

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
Severity48% × 45%
Exploitation0% × 40%
Automatability0% × 15%
EPSS PROB
0.2%
EPSS %ILE
13th
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
redhatMentions a patch (unverified)

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 / EcosystemFix (by version range) / 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 rangeFix by version rangeDependents
vllm0.11.0 ... 0.23.0 (23 versions)
  • 0.11.0 up to 0.24.0: fixed in 0.24.0
  • 0.11.0 through 0.23.0: no fix on record
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 23× 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 167 total refreshes for this CVE.

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

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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 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 0.2% probability of exploitation in the next 30 days (13th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-12491?
CVE-2026-12491 has a CVSS base score of 4.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-12491?
A fix for CVE-2026-12491 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-12491 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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