CVE-2026-34755

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5%, top 62% 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, secondary
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

A fix is available — apply it.

vLLM is an inference and serving engine for large language models (LLMs). From 0.7.0 to before 0.19.0, the VideoMediaIO.load_base64() method at vllm/multimodal/media/video.py splits video/jpeg data URLs by comma to extract individual JPEG frames, but does not enforce a frame count limit. The num_frames parameter (default: 32), which is enforced by the load_bytes() code path, is completely bypassed in the video/jpeg base64 path. An attacker can send a single API request containing thousands of comma-separated base64-encoded JPEG frames, causing the server to decode all frames into memory and crash with OOM. This vulnerability is fixed in 0.19.0.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
39%
KEV
Not listed

Published

April 6, 2026

Last Modified

August 25, 2026

Advisory Details (6)

Auto-updated Jul 8, 2026
Patch available. Sources: redhat, github.
redhat Patch Available
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34755.json
redhat

2455403 – (CVE-2026-34755) CVE-2026-34755 vLLM: vLLM: Denial of Service due to excessive video frame processing

https://bugzilla.redhat.com/show_bug.cgi?id=2455403
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-34755
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:36006
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:36005
github Patch Available

Denial of Service via Unbounded Frame Count in video/jpeg Base64 Processing · Advisory · vllm-project/vllm · GitHub

https://github.com/vllm-project/vllm/security/advisories/GHSA-pq5c-rjhq-qp7p

Vendor Advisories for CVE-2026-34755(9)

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

Patch Availability(8)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatrhelai3/disk-image-cuda-rhel9:17873107172026-08-24redhat
redhatrhelai3/bootc-rocm-rhel9:17872440062026-08-24redhat
redhatrhaii/vllm-rocm-rhel9:17871517742026-08-20redhat
redhatrhaii/vllm-spyre-rhel9:17871518402026-08-20redhat
redhatrhaii/vllm-cuda-rhel9:17871517712026-08-20redhat
redhatrhaii/vllm-cpu-rhel9:17871517692026-08-20redhat
redhatrhaiis/vllm-cuda-rhel9:17829510122026-07-06redhat
redhatrhaiis/vllm-rocm-rhel9:17829512442026-07-06redhat

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
vllm0.10.0 ... 0.9.2 (33 versions)0.19.0—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 39× 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 181 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-34755?
CVE-2026-34755 is a medium vulnerability published on April 6, 2026. vLLM is an inference and serving engine for large language models (LLMs). From 0.7.0 to before 0.19.0, the VideoMediaIO.loadbase64() method at vllm/multimodal/media/video.py splits video/jpeg data URLs by comma to extract individual JPEG frames, but does not enforce a frame count limit. The…
When was CVE-2026-34755 disclosed?
CVE-2026-34755 was first published in the National Vulnerability Database on April 6, 2026, with the most recent update on August 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-34755 actively exploited?
CVE-2026-34755 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 61.1% of all scored CVEs.
What is the CVSS score of CVE-2026-34755?
CVE-2026-34755 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-34755?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-34755, 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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