CVE-2026-121629
Gst-plugins-good: gst-plugins-good: local file disclosure via unvalidated file:// uris in adaptivedemux2 manifest handling
A flaw was found in GStreamer's adaptive streaming demuxers (HLS, DASH, MSS). When processing a media playlist or manifest, URIs referenced in the manifest content are fetched without restricting which URI schemes are permitted. An attacker who controls a manifest URL, or who can inject content into an HTTP manifest response, can include file:// URIs pointing to arbitrary local files, causing the affected application to read and process those files. In automated or server-side deployments such as media recorders, proxies, and downloaders, this can lead to disclosure of sensitive local files. Existence of files can also be inferred through differing error responses even when content is not directly observable.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
What each source reports
CVE List Score used
Gst-plugins-good: gst-plugins-good: local file disclosure via unvalidated file:// uris in adaptivedemux2 manifest handling
A flaw was found in GStreamer's adaptive streaming demuxers (HLS, DASH, MSS). When processing a media playlist or manifest, URIs referenced in the manifest content are fetched without restricting which URI schemes are permitted. An attacker who controls a manifest URL, or who can inject content into an HTTP manifest response, can include file:// URIs pointing to arbitrary local files, causing the affected application to read and process those files. In automated or server-side deployments such as media recorders, proxies, and downloaders, this can lead to disclosure of sensitive local files. Existence of files can also be inferred through differing error responses even when content is not directly observable.
- Record
CVE-2026-121629- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-73
- Updated
- 2026-11-09
EUVDEUVD-2026-119997
A flaw was found in GStreamer's adaptive streaming demuxers (HLS, DASH, MSS). When processing a media playlist or manifest, URIs referenced in the manifest content are fetched without restricting which URI schemes are permitted. An attacker who controls a manifest URL, or who can inject content into an HTTP manifest response, can include file:// URIs pointing to arbitrary local files, causing the affected application to read and process those files. In automated or server-side deployments such as media recorders, proxies, and downloaders, this can lead to disclosure of sensitive local files. Existence of files can also be inferred through differing error responses even when content is not directly observable.
- Record
EUVD-2026-119997- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-09
GitHub AdvisoriesGHSA-pc5r-2484-vm3g
A flaw was found in GStreamer's adaptive streaming demuxers (HLS, DASH, MSS). When processing a...
A flaw was found in GStreamer's adaptive streaming demuxers (HLS, DASH, MSS). When processing a media playlist or manifest, URIs referenced in the manifest content are fetched without restricting which URI schemes are permitted. An attacker who controls a manifest URL, or who can inject content into an HTTP manifest response, can include file:// URIs pointing to arbitrary local files, causing the affected application to read and process those files. In automated or server-side deployments such as media recorders, proxies, and downloaders, this can lead to disclosure of sensitive local files. Existence of files can also be inferred through differing error responses even when content is not directly observable.
- Record
GHSA-pc5r-2484-vm3g- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-73
- Updated
- 2026-11-09
NVD
A flaw was found in GStreamer's adaptive streaming demuxers (HLS, DASH, MSS). When processing a media playlist or manifest, URIs referenced in the manifest content are fetched without restricting which URI schemes are permitted. An attacker who controls a manifest URL, or who can inject content into an HTTP manifest response, can include file:// URIs pointing to arbitrary local files, causing the affected application to read and process those files. In automated or server-side deployments such as media recorders, proxies, and downloaders, this can lead to disclosure of sensitive local files. Existence of files can also be inferred through differing error responses even when content is not directly observable.
- Record
CVE-2026-121629- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-73
- Updated
- 2026-11-09
OSVDEBIAN-CVE-2026-121629
- Record
DEBIAN-CVE-2026-121629- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-10
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
gst-plugins-good1.0Debian:12 |
All versions, plus listed versions 1.22.0-51.22.0-5+deb12u11.22.0-5+deb12u21.22.0-5+deb12u31.22.0-5+deb12u4 Show 45 moreShow less1.22.1-11.22.10-11.22.3-11.22.3-21.22.4-11.22.5-11.22.6-11.22.7-11.22.8-11.22.8-21.22.8-31.22.9-11.23.1-11.23.2-11.23.90-11.24.0-11.24.1-11.24.1-21.24.10-11.24.11-11.24.11-21.24.11-31.24.11-41.24.11-51.24.12-11.24.2-11.24.3-11.24.4-11.24.5-11.24.6-11.24.7-11.24.8-11.24.9-11.25.1-11.25.1-21.25.1-31.25.50-11.25.90-11.25.90-21.26.0-11.26.1-11.26.10-11.26.2-11.26.3-11.26.4-1 |
None known |
gst-plugins-good1.0Debian:13 |
All versions, plus listed versions 1.26.10-11.26.2-11.26.2-1+deb13u11.26.2-1+deb13u21.26.3-1 Show 29 moreShow less1.26.4-11.26.5-11.26.5-21.26.5-2+hurd.11.26.5-31.26.6-11.26.7-11.26.8-11.26.9-11.27.1-11.27.2-11.27.50-11.27.50-21.27.90-11.28.0-11.28.1-11.28.2-11.28.2-21.28.2-31.28.2-41.28.3-11.28.4-11.28.5-11.28.6-11.28.7-11.28.8-11.28.9-11.29.1-11.29.2-1 |
None known |
gst-plugins-good1.0Debian:14 |
All versions, plus listed versions 1.26.10-11.26.2-11.26.3-11.26.4-11.26.5-1 Show 27 moreShow less1.26.5-21.26.5-2+hurd.11.26.5-31.26.6-11.26.7-11.26.8-11.26.9-11.27.1-11.27.2-11.27.50-11.27.50-21.27.90-11.28.0-11.28.1-11.28.2-11.28.2-21.28.2-31.28.2-41.28.3-11.28.4-11.28.5-11.28.6-11.28.7-11.28.8-11.28.9-11.29.1-11.29.2-1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases, references | OSV | |
| published | EUVD | |
| published | EUVD, NVD | |
| aliases, references | GitHub Advisories | |
| cwes, products, references, severity, title | CVE List | |
| first indexed | EUVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-121629 is a high vulnerability (CVSS 7.5) in Red Hat Enterprise Linux 10, published November 9, 2026. No source lists public exploit code. No source names a fixed version.
References
access.redhat.com/security/cve/CVE-2026-121629
bugzilla.redhat.com/show_bug.cgi?id=2565965
gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5380
gstreamer.freedesktop.org/security/sa-2026-0097.html
nvd.nist.gov/vuln/detail/CVE-2026-121629
github.com/advisories/GHSA-pc5r-2484-vm3g
security-tracker.debian.org/tracker/CVE-2026-121629
Left out here: 28 versions. The JSON record has them.