CVE-2026-53704

HIGHPre-NVD 7.17.1
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-06-15. A secondary CVSS source baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source

Also known asEUVD-2026-36802 (ENISA EUVD) · GHSA-j3jj-fwr8-4v9m (GitHub Security Advisories)Source: ENISA EUVD

7.1EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A flaw was found in GStreamer's RealMedia demuxer in the gst-plugins-ugly package. When processing a RealMedia file containing a specially crafted FILEINFO metadata section, the demuxer parses variable-name and variable-value pairs using re_skip_pascal_string() without validating that offsets remain within the mapped buffer. Additionally, the element count controlling the parsing loop is read from attacker-controlled data without validation, which can cause an infinite loop. A crafted RealMedia file can cause the application to crash, hang, or potentially read limited adjacent memory contents.

CVSS v3
7.1
EG Score
7.1HIGHmedium confidence
EG Risk
32
EG Risk 32/100

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)
Severity71% × 45%
Impact severity (EG Severity): CVSS 7.1 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.2% × 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
0.2%
EPSS %ILE
15th
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 (7.1): severity, escalated by confirmed exploitation. This CVE's 7.1 is its impact severity (EG Severity), not escalated.

EG Severity
7.1 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-11). 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

November 5, 2026

Advisory Details (2)

Auto-updated Jun 15, 2026
Patch available. Sources: redhat.
Red Hat

2487614 – (CVE-2026-53704) CVE-2026-53704 gstreamer1-plugins-ugly-free: GStreamer: Out-of-bounds read in RealMedia demuxer FILEINFO metadata parser

https://bugzilla.redhat.com/show_bug.cgi?id=2487614
Red HatMentions a patch (unverified)

cve-details

https://access.redhat.com/security/cve/CVE-2026-53704

Patch Availability(5)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntugstreamer1.0-plugins-ugly (1.24.1-1ubuntu0.1~esm1) @ noble2026-10-30ubuntu
redhatgstreamer1-plugins-ugly-free-0:1.22.12-4.el9_6.12026-08-05redhat
redhatgstreamer1-plugins-ugly-free-0:1.24.11-1.el10_0.22026-08-05redhat
redhatgstreamer1-plugins-ugly-free-0:1.26.7-2.el10_2.12026-07-08redhat
redhatgstreamer1-plugins-ugly-free-0:1.22.12-6.el9_8.12026-07-08redhat

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)
PackageVulnerable rangeFix by version rangeDependents
gst-plugins-ugly1.01.18.4-2 ... 1.29.2-1 (72 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
gst-plugins-ugly1.01.22.0-2 ... 1.29.2-1 (65 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
gst-plugins-ugly1.01.26.10-1 ... 1.29.2-1 (26 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
gst-plugins-ugly1.01.26.10-1 ... 1.28.3-1 (18 versions)
  • every version up to 1.28.4-1: fixed in 1.28.4-1
—

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 9× in last 7d / 44× 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 its CVE.org record (CNA or CISA ADP). 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). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 394 rows 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 294 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-12 16:34 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  2. 2026-11-12 07:41 UTCEchelonGraph re-scored
  3. 2026-11-12 07:41 UTCVendor advisory
  4. 2026-11-12 07:41 UTCGHSA enrichmentGHSA-j3jj-fwr8-4v9m · GitHub severity HIGH · GitHub CVSS 7.1
  5. 2026-11-11 16:40 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  6. 2026-11-10 16:44 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  7. 2026-11-09 16:35 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  8. 2026-11-08 16:39 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  9. 2026-11-07 16:39 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  10. 2026-11-06 16:38 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  11. 2026-11-05 22:28 UTCEchelonGraph re-scored
  12. 2026-11-05 22:28 UTCVendor advisory
  13. 2026-11-05 22:28 UTCGHSA enrichmentGHSA-j3jj-fwr8-4v9m · GitHub severity HIGH · GitHub CVSS 7.1
  14. 2026-11-05 21:53 UTCEchelonGraph re-scored
  15. 2026-11-05 21:53 UTCVendor advisory
  16. 2026-11-05 21:53 UTCGHSA enrichmentGHSA-j3jj-fwr8-4v9m · GitHub severity HIGH · GitHub CVSS 7.1
  17. 2026-11-05 16:38 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  18. 2026-11-05 12:06 UTCEchelonGraph re-scored
  19. 2026-11-05 12:06 UTCVendor advisory
  20. 2026-11-05 12:06 UTCGHSA enrichmentGHSA-j3jj-fwr8-4v9m · GitHub severity HIGH · GitHub CVSS 7.1
  21. 2026-11-04 16:35 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  22. 2026-11-03 16:48 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  23. 2026-11-02 16:45 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  24. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  25. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.2% · 15th percentile
Show 75 more
  1. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  2. 2026-10-30 02:51 UTCEchelonGraph re-scored
  3. 2026-10-30 02:51 UTCVendor advisory
  4. 2026-10-30 02:51 UTCGHSA enrichmentGHSA-j3jj-fwr8-4v9m · GitHub severity HIGH · GitHub CVSS 7.1
  5. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  6. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  7. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  8. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  9. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  10. 2026-10-25 14:20 UTCEchelonGraph re-scored
  11. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  12. 2026-10-23 17:38 UTCEchelonGraph re-scored
  13. 2026-10-23 17:38 UTCVendor advisory
  14. 2026-10-23 17:38 UTCGHSA enrichmentGHSA-j3jj-fwr8-4v9m · GitHub severity HIGH · GitHub CVSS 7.1
  15. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  16. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  17. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  18. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  19. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  20. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  21. 2026-10-18 03:31 UTCEchelonGraph re-scored
  22. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  23. 2026-10-17 08:25 UTCEchelonGraph re-scored
  24. 2026-10-17 08:25 UTCVendor advisory
  25. 2026-10-17 08:25 UTCGHSA enrichmentGHSA-j3jj-fwr8-4v9m · GitHub severity HIGH · GitHub CVSS 7.1
  26. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  27. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  28. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  29. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  30. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  31. 2026-10-12 15:57 UTCEchelonGraph re-scored
  32. 2026-10-11 19:40 UTCEchelonGraph re-scored
  33. 2026-10-11 16:55 UTCEchelonGraph re-scored
  34. 2026-10-11 14:18 UTCEchelonGraph re-scored
  35. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  36. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  37. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  38. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  39. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  40. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  41. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  42. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  43. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  44. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  45. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  46. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  47. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  48. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  49. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  50. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  51. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  52. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  53. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  54. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  55. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  56. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  57. 2026-09-14 03:42 UTCEchelonGraph re-scored
  58. 2026-09-14 03:42 UTCVendor advisory
  59. 2026-09-14 03:42 UTCGHSA enrichmentGHSA-j3jj-fwr8-4v9m · GitHub severity HIGH · GitHub CVSS 7.1
  60. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  61. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  62. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  63. 2026-09-08 23:21 UTCEchelonGraph re-scored
  64. 2026-09-08 23:21 UTCVendor advisory
  65. 2026-09-08 23:21 UTCGHSA enrichmentGHSA-j3jj-fwr8-4v9m · GitHub severity HIGH · GitHub CVSS 7.1
  66. 2026-09-08 23:00 UTCEchelonGraph re-scored
  67. 2026-09-08 23:00 UTCVendor advisory
  68. 2026-09-08 22:59 UTCGHSA enrichmentGHSA-j3jj-fwr8-4v9m · GitHub severity HIGH · GitHub CVSS 7.1
  69. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  70. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  71. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  72. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  73. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  74. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  75. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.2% · 13th percentile

Frequently asked(5)

What is CVE-2026-53704?
CVE-2026-53704 is a high-severity vulnerability; its CVE record was published on June 15, 2026. A flaw was found in GStreamer's RealMedia demuxer in the gst-plugins-ugly package. When processing a RealMedia file containing a specially crafted FILEINFO metadata section, the demuxer parses variable-name and variable-value pairs using re_skip_pascal_string() without validating that offsets…
When was CVE-2026-53704 made public?
CVE-2026-53704 was made public on June 12, 2026: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on June 15, 2026. EchelonGraph's copy of the record carries a last-modified date of November 5, 2026; the record at its source may have been updated since.
Is CVE-2026-53704 actively exploited?
CVE-2026-53704 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (15th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-53704?
CVE-2026-53704 has a CVSS base score of 7.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-53704?
A fix for CVE-2026-53704 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-53704 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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