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TI-2026-15049 Aliases CVE-2026-18296GHSA-3h9q-557w-x4r6

Heap-based buffer overflow in GStreamer

Priority LOW 35CWE-122Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 14 fixed, 1 without a fix

Attack profile from CVSS 3.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-122 and the CVSS impact.

Summary

GStreamer MRF File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of MRF files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-29608.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00229 13th percentileScored 2026-11-07
Fix Partial Red Hat: 11 advisoriesRed Hat: 14 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
GStreamerGStreamer13fcb641ed33d1472e4ffdec2846180b15405053—No fix listedCNA
  • GStreamer VendorGStreamer Affected 13fcb641ed33d1472e4ffdec2846180b15405053 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:gstreamer:gstreamer:*:*:*:*:*:*:*:*before 1.28.5VulnerableGStreamer
  • cpe:2.3:a:gstreamer:gstreamer:*:*:*:*:*:*:*:* Versions before 1.28.5 Vulnerable ·GStreamer

Remediation

Red Hat 11 advisories

  • RHSA-2026:73424 Released 2026-09-29 · Red Hat rating Important
    gstreamer1-plugins-good security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.4) gstreamer1-plugins-good-1.16.1-4.el8_4.5, gstreamer1-plugins-good-gtk-1.16.1-4.el8_4.5
    • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) gstreamer1-plugins-good-1.16.1-4.el8_4.5, gstreamer1-plugins-good-gtk-1.16.1-4.el8_4.5
  • RHSA-2026:73040 Released 2026-09-29 · Red Hat rating Important
    gstreamer1-plugins-good security update
    • Red Hat Enterprise Linux AppStream E4S (v.8.8) gstreamer1-plugins-good-1.16.1-5.el8_8.6, gstreamer1-plugins-good-gtk-1.16.1-5.el8_8.6
    • Red Hat Enterprise Linux AppStream TUS (v.8.8) gstreamer1-plugins-good-1.16.1-5.el8_8.6, gstreamer1-plugins-good-gtk-1.16.1-5.el8_8.6
  • RHSA-2026:72482 Released 2026-09-28 · Red Hat rating Important
    gstreamer1-plugins-good security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.6) gstreamer1-plugins-good-1.16.1-4.el8_6.6, gstreamer1-plugins-good-gtk-1.16.1-4.el8_6.6
    • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6) gstreamer1-plugins-good-1.16.1-4.el8_6.6, gstreamer1-plugins-good-gtk-1.16.1-4.el8_6.6
Show 8 more Red Hat advisories
  • RHSA-2026:72367 Released 2026-09-28 · Red Hat rating Important
    gstreamer1-plugins-good security update
    • Red Hat Enterprise Linux Server (v. 7 ELS) gstreamer1-plugins-good-1.10.4-4.el7_9.6, gstreamer1-plugins-good-1.10.4-4.el7_9.6.ppc
  • RHSA-2026:71648 Released 2026-09-24 · Red Hat rating Important
    gstreamer1-plugins-good security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) gstreamer1-plugins-good-1.22.12-5.el9_6.6, gstreamer1-plugins-good-gtk-1.22.12-5.el9_6.6
  • RHSA-2026:71647 Released 2026-09-24 · Red Hat rating Important
    gstreamer1-plugins-good security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.4) gstreamer1-plugins-good-1.22.1-4.el9_4.6, gstreamer1-plugins-good-gtk-1.22.1-4.el9_4.6
  • RHSA-2026:71646 Released 2026-09-24 · Red Hat rating Important
    gstreamer1-plugins-good security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.2) gstreamer1-plugins-good-1.18.4-8.el9_2.6, gstreamer1-plugins-good-gtk-1.18.4-8.el9_2.6
  • RHSA-2026:71650 Released 2026-09-24 · Red Hat rating Important
    gstreamer1-plugins-good security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) gstreamer1-plugins-good-1.24.11-1.el10_0.7, gstreamer1-plugins-good-gtk-1.24.11-1.el10_0.7
  • RHSA-2026:59179 Released 2026-08-24 · Red Hat rating Important
    gstreamer1-plugins-good security update
    • Red Hat Enterprise Linux AppStream (v. 8) gstreamer1-plugins-good-1.16.1-7.el8_10.7, gstreamer1-plugins-good-gtk-1.16.1-7.el8_10.7
  • RHSA-2026:59152 Released 2026-08-24 · Red Hat rating Important
    gstreamer1-plugins-good security update
    • Red Hat Enterprise Linux AppStream (v. 9) gstreamer1-plugins-good-1.22.12-7.el9_8.8, gstreamer1-plugins-good-gtk-1.22.12-7.el9_8.8
  • RHSA-2026:59133 Released 2026-08-24 · Red Hat rating Important
    gstreamer1-plugins-good security update
    • Red Hat Enterprise Linux AppStream (v. 10) gstreamer1-plugins-good-1.26.7-2.el10_2.7, gstreamer1-plugins-good-gtk-1.26.7-2.el10_2.7

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    GStreamer — vendor-provided URL

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    Show all 2 records → Advisory →

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 8AffectedNo fix yet
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:59133
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2026:59179
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:59152
Red Hat Enterprise Linux AppStream AUS (v.8.4)Fixed RHSA-2026:73424
Red Hat Enterprise Linux AppStream AUS (v.8.6)Fixed RHSA-2026:72482
Red Hat Enterprise Linux AppStream E4S (v.8.8)Fixed RHSA-2026:73040
Red Hat Enterprise Linux AppStream E4S (v.9.2)Fixed RHSA-2026:71646
Red Hat Enterprise Linux AppStream E4S (v.9.4)Fixed RHSA-2026:71647
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:71650
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:71648
Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)Fixed RHSA-2026:73424
Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)Fixed RHSA-2026:72482
Red Hat Enterprise Linux AppStream TUS (v.8.8)Fixed RHSA-2026:73040
Red Hat Enterprise Linux Server (v. 7 ELS)Fixed RHSA-2026:72367
Not affected: 3 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-18296
  2. 2026-10-03 Alias added: GHSA-3h9q-557w-x4r6

References

Patch 1

Advisory 1

  • TI-2025-29786 In GStreamer through 1.26.1, the isomp4 plugin's qtdemux_parse_trak function may read… CVSS 3.1HIGH 8.1
  • TI-2024-31895 GHSL-2024-117: GStreamer has an out-of-bounds write in Ogg demuxer CVSS 4.0HIGH 8.6
  • TI-2024-31893 GHSL-2024-118: GStreamer has a null pointer dereference in gst_gdk_pixbuf_dec_flush CVSS 4.0HIGH 8.6
  • TI-2024-31887 GHSL-2024-116: Stack-buffer overflow in gst_opus_dec_parse_header CVSS 4.0HIGH 8.6
  • TI-2024-31829 GHSL-2024-197: GStreamer uses uninitialized stack memory in Matroska/WebM demuxer CVSS 4.0HIGH 8.6
  • TI-2024-31828 GHSL-2024-195: GStreamer has an OOB-write in convert_to_s334_1a CVSS 4.0HIGH 8.6
See all 109 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences