A denial of service vulnerability was found in GStreamer's AV1 codec parser in gst-plugins-bad. The gst_av1_parser_parse_tile_list_obu() function passes a byte count to a bit-reader API that expects a bit count, causing parser desynchronization. A remote attacker could trick a user into opening a specially crafted AV1 media file, triggering an assertion abort and causing the application to crash.
CVE-2026-52718
“—” beside the score: it is equal to the CVSS score beside it.
Score 6.5 from GitHub Security Advisory published 2026-06-15. A secondary CVSS source baseline 6.5; sources differ by 0.0.
Also known asEUVD-2026-36805 (ENISA EUVD) · GHSA-4cjw-rphc-c5v6 (GitHub Security Advisories)Source: ENISA EUVD
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 6.5
- EG Score
- 6.5MEDIUMmedium confidence
- EG Risk
- 30EG Risk 30/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity65% × 45%Impact severity (EG Severity): CVSS 6.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation0.7% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability0% × 15%CISA's SSVC Automatable value: no (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: A fix is available. Apply it within your standard update timelines. - EPSS PROB
- 0.4%
- EPSS %ILE
- 32nd
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (6.5): severity, escalated by confirmed exploitation. This CVE's 6.5 is its impact severity (EG Severity), not escalated.
- EG Severity
- 6.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
- EG Likelihood
- 0.4% within 30 daysSource: FIRST EPSS. FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.
A fix is available. Apply it within your standard update timelines.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.
The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
June 15, 2026
Last Modified
July 30, 2026
Advisory Details (3)
Auto-updated Jun 15, 2026GStreamer / gstreamer · GitLab
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/51032486328 – (CVE-2026-52718) CVE-2026-52718 gstreamer1-plugins-bad-free: GStreamer: Denial of service via AV1 tile_list_obu parser byte/bit confusion
https://bugzilla.redhat.com/show_bug.cgi?id=2486328cve-details
https://access.redhat.com/security/cve/CVE-2026-52718Vendor Advisories for CVE-2026-52718(6)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- RHSA-2026:47071Red Hat Product SecurityHigh
Red Hat Security Advisory: gstreamer1-plugins-bad-free security update
- RHSA-2026:47070Red Hat Product SecurityHigh
Red Hat Security Advisory: gstreamer1-plugins-bad-free security update
- RHSA-2026:47069Red Hat Product SecurityHigh
Red Hat Security Advisory: gstreamer1-plugins-bad-free security update
- RHSA-2026:36834Red Hat Product SecurityHigh
Red Hat Security Advisory: gstreamer1-plugins-bad-free security update
- RHSA-2026:36749Red Hat Product SecurityHigh
Red Hat Security Advisory: gstreamer1-plugins-bad-free security update
- GHSA-4cjw-rphc-c5v6GitHub Security AdvisoriesMedium
A denial of service vulnerability was found in GStreamer's AV1 codec parser in gst-plugins-bad....
Patch Availability(6)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| redhat | gstreamer1-plugins-bad-free-0:1.24.11-3.el10_0.4 | 2026-07-29 | redhat |
| redhat | gstreamer1-plugins-bad-free-0:1.22.12-5.el9_6.4 | 2026-07-28 | redhat |
| redhat | gstreamer1-plugins-bad-free-0:1.18.4-9.el9_2.3 | 2026-07-28 | redhat |
| redhat | gstreamer1-plugins-bad-free-0:1.22.1-6.el9_4.4 | 2026-07-28 | redhat |
| redhat | gstreamer1-plugins-bad-free-0:1.26.7-2.el10_2.4 | 2026-07-08 | redhat |
| redhat | gstreamer1-plugins-bad-free-0:1.22.12-7.el9_8.1 | 2026-07-08 | redhat |
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
(4 across 4 ecosystems)
Debian:11(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| gst-plugins-bad1.0 | 1.18.4-3 ... 1.29.2-2 (110 versions) |
| — |
Debian:12(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| gst-plugins-bad1.0 | 1.22.0-4 ... 1.29.2-2 (97 versions) |
| — |
Debian:13(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| gst-plugins-bad1.0 | 1.26.2-3, 1.26.2-3+deb13u1 |
| — |
Debian:14(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| gst-plugins-bad1.0 | 1.26.10-1 ... 1.28.3-1 (29 versions) |
| — |
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 7× in last 7d / 38× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
Showing the most recent 100 of 272 refreshes on record for this CVE.
A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 172 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-10-25 14:21 UTCEG score recompute
- 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
- 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-22 22:53 UTCEG score recompute
- 2026-10-22 22:53 UTCGHSA enrichmentGHSA-4cjw-rphc-c5v6 · GitHub CVSS 6.5
- 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-18 03:32 UTCEG score recompute
- 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
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- 2026-10-12 15:58 UTCEG score recompute
- 2026-10-11 19:41 UTCEG score recompute
- 2026-10-11 16:56 UTCEG score recompute
- 2026-10-11 14:19 UTCEG score recompute
- 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-09-26 00:27 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-09-14 03:42 UTCEG score recompute
- 2026-09-14 03:42 UTCVendor advisory
- 2026-09-14 03:42 UTCGHSA enrichmentGHSA-4cjw-rphc-c5v6 · GitHub CVSS 6.5
- 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-08-30 22:58 UTCEG score recompute
- 2026-08-30 22:58 UTCVendor advisory
- 2026-08-30 22:58 UTCGHSA enrichmentGHSA-4cjw-rphc-c5v6 · GitHub CVSS 6.5
- 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-08-24 23:33 UTCEG score recompute
- 2026-08-24 23:33 UTCVendor advisory
- 2026-08-24 23:33 UTCGHSA enrichmentGHSA-4cjw-rphc-c5v6 · GitHub CVSS 6.5
- 2026-08-23 09:44 UTCEG score recompute
- 2026-08-23 09:44 UTCVendor advisory
- 2026-08-23 09:44 UTCGHSA enrichmentGHSA-4cjw-rphc-c5v6 · GitHub CVSS 6.5
- 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-08-21 18:57 UTCEG score recompute
- 2026-08-21 18:57 UTCVendor advisory
- 2026-08-21 18:57 UTCGHSA enrichmentGHSA-4cjw-rphc-c5v6 · GitHub CVSS 6.5
- 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-08-20 16:21 UTCEG score recompute
- 2026-08-20 16:21 UTCVendor advisory
- 2026-08-20 16:21 UTCGHSA enrichmentGHSA-4cjw-rphc-c5v6 · GitHub CVSS 6.5
- 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-08-19 13:14 UTCEG score recompute
- 2026-08-19 13:14 UTCVendor advisory
- 2026-08-19 13:14 UTCGHSA enrichmentGHSA-4cjw-rphc-c5v6 · GitHub CVSS 6.5
- 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-08-16 22:27 UTCEG score recompute
- 2026-08-16 22:27 UTCVendor advisory
- 2026-08-16 22:27 UTCGHSA enrichmentGHSA-4cjw-rphc-c5v6 · GitHub CVSS 6.5
- 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-08-15 18:43 UTCEG score recompute
Related CVEs(same product + same vendor + same CWE)
Same product
10 shownDebian:11:gst-plugins-bad1.0
Same vendor
3 shownredhat:RHSA-2026:36749
Frequently asked(5)
What is CVE-2026-52718?
When was CVE-2026-52718 made public?
Is CVE-2026-52718 actively exploited?
What is the CVSS score of CVE-2026-52718?
How do I remediate CVE-2026-52718?
Dependency Blast Radius
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