CVE-2026-5056

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-29. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

A fix is available — apply it.

GStreamer qtdemux Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation.

The specific flaw exists within the parsing of UncompressedFrameConfigBox structures. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-29392.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
33%
KEV
Not listed

Published

July 29, 2026

Last Modified

July 30, 2026

Advisory Details (2)

Auto-updated Jul 29, 2026
No patch confirmed yet.
generic
https://gitlab.freedesktop.org/api/v4/projects/gstreamer%2Fgstreamer/repository/files/security-advisories%2Fsa-2026-0016.md/raw?ref=main
generic

ZDI-26-283 - TrendAI™ Zero Day Initiative™ (ZDI)

https://www.zerodayinitiative.com/advisories/ZDI-26-283/

Vendor Advisories for CVE-2026-5056(1)

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

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibgstreamer-plugins-good1.0-dev (1.26.5-1ubuntu2.2) @ questing2026-09-15ubuntu
redhatgstreamer1-plugins-good-0:1.26.7-2.el10_2.22026-08-03redhat

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

(2 across 2 ecosystems)
Debian:13(1)
PackageVulnerable rangeFixed inDependents
gst-plugins-good1.01.26.2-11.26.2-1+deb13u1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
gst-plugins-good1.01.26.10-1 ... 1.28.1-1 (19 versions)1.28.2-1—

Weakness Classification(1)

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

All Vendor Advisories

(2)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 32× in last 7d / 136× 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 250 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-5056?
CVE-2026-5056 is a high vulnerability published on July 29, 2026. GStreamer qtdemux Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary…
When was CVE-2026-5056 disclosed?
CVE-2026-5056 was first published in the National Vulnerability Database on July 29, 2026, with the most recent update on July 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-5056 actively exploited?
CVE-2026-5056 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 66.7% of all scored CVEs.
What is the CVSS score of CVE-2026-5056?
CVE-2026-5056 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-5056?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-5056, 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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