CVE-2026-77014
MEDIUM 5.3 ALL-YEARSA flaw was found in libsoup's SoupServer HTTP Range header processing. The sort_ranges() comparator in soup-message-headers.c truncates a 64-bit subtraction result to 32-bit int, flipping the sign for range offsets differing by more than INT_MAX. This causes silent omission of requested byte ranges from HTTP 206 Partial Content responses on resources larger than approximately 2 GB.
No known exploitation, public exploit, or elevated probability at this time. Track for changes.
Exploitation likelihood
0.2%chance of exploitation in 30 days · 14th percentile
Impact if exploited
5.3CVSS 3.1 · MEDIUM · CNA
- ConfidentialityNone
- IntegrityLow
- AvailabilityNone
What an attacker needs
- ✓Access: Reachable over the network — no local access needed
- ✓Privileges: No account or privileges required
- ✓User interaction: No user interaction needed
- ✓Complexity: No special conditions — reliably repeatable
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept
No public PoC is currently catalogued.
Search for new PoCs
Search GitHub now — results may be empty or unverified.
Tracked sources are checked weekly for the full archive, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.
Affected
Products Red Hat Enterprise Linux 10 Red Hat Enterprise Linux 6 Red Hat Enterprise Linux 7 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 9 Red Hat Openshift Container Platform 4
Weakness (CWE)
- CWE-197: Numeric Truncation Error
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
References and research data (JSON)
Vendor product assessments
Showing 32 of 44 vendor product statements; 12 omitted. Read the full vendor advisory.
libsoup3 as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/libsoup3
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
libsoup3-devel as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/libsoup3-devel
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
libsoup3.src as a component of Red Hat Enterprise Linux 10 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/libsoup3?arch=src
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
libsoup as a component of Red Hat Enterprise Linux 6 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/libsoup
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
libsoup.src as a component of Red Hat Enterprise Linux 6 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/libsoup?arch=src
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
gnome-clocks as a component of Red Hat Enterprise Linux 7 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/gnome-clocks
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
gnome-clocks.src as a component of Red Hat Enterprise Linux 7 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/gnome-clocks?arch=src
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
libsoup-devel as a component of Red Hat Enterprise Linux 7 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/libsoup-devel
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
libsoup.src as a component of Red Hat Enterprise Linux 7 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/libsoup?arch=src
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
libsoup as a component of Red Hat Enterprise Linux 8 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/libsoup
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
libsoup.src as a component of Red Hat Enterprise Linux 8 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/libsoup?arch=src
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
podman-catatonit (container-tools:rhel8) as a component of Red Hat Enterprise Linux 8 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/podman-catatonit?rpmmod=container-tools:rhel8
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
podman-gvproxy (container-tools:rhel8) as a component of Red Hat Enterprise Linux 8 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/podman-gvproxy?rpmmod=container-tools:rhel8
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
podman-manpages (container-tools:rhel8) as a component of Red Hat Enterprise Linux 8 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/podman-manpages?rpmmod=container-tools:rhel8
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
podman-plugins (container-tools:rhel8) as a component of Red Hat Enterprise Linux 8 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/podman-plugins?rpmmod=container-tools:rhel8
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
podman-tests (container-tools:rhel8) as a component of Red Hat Enterprise Linux 8 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/podman-tests?rpmmod=container-tools:rhel8
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
podman.src (container-tools:rhel8) as a component of Red Hat Enterprise Linux 8 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/podman?arch=src&rpmmod=container-tools:rhel8
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
libsoup as a component of Red Hat Enterprise Linux 9 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/libsoup
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
libsoup-devel as a component of Red Hat Enterprise Linux 9 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/libsoup-devel
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
libsoup.src as a component of Red Hat Enterprise Linux 9 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/libsoup?arch=src
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
podman-catatonit as a component of Red Hat Enterprise Linux 9 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/podman-catatonit
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
podman-docker as a component of Red Hat Enterprise Linux 9 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/podman-docker
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
podman-plugins as a component of Red Hat Enterprise Linux 9 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/podman-plugins
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
podman-remote as a component of Red Hat Enterprise Linux 9 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/podman-remote
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
podman-tests as a component of Red Hat Enterprise Linux 9 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/podman-tests
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
podman as a component of Red Hat OpenShift Container Platform 4 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/podman
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
podman-catatonit as a component of Red Hat OpenShift Container Platform 4 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/podman-catatonit
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
podman-docker as a component of Red Hat OpenShift Container Platform 4 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/podman-docker
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
podman-manpages as a component of Red Hat OpenShift Container Platform 4 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/podman-manpages
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
podman-plugins as a component of Red Hat OpenShift Container Platform 4 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/podman-plugins
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
podman-tests as a component of Red Hat OpenShift Container Platform 4 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/podman-tests
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
podman.src as a component of Red Hat OpenShift Container Platform 4 · known affected
Vendor assessment for this product only.
pkg:rpm/redhat/podman?arch=src
- workaround: No mitigation is available for this vulnerability.
- none available: Fix deferred
All CVSS metrics
- MEDIUM 5.3 v3.1 · CNA Primary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - MEDIUM 5.3 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
References
Advisories
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-77014.json Red Hat · CVE-2026-77014 · Updated 2026-08-20T08:50:18+00:00
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-63225 EUVD · EUVD-2026-63225
Technical & other
- https://access.redhat.com/security/cve/CVE-2026-77014 CVE record · redhat · Updated 2026-08-20T08:21:22.225Z
NVD · CVE-2026-77014 · Updated 2026-08-25T15:16:43.187
Red Hat · CVE-2026-77014 · Updated 2026-08-20T08:50:18+00:00 - https://bugzilla.redhat.com/show_bug.cgi?id=2520143 CVE record · redhat · Updated 2026-08-20T08:21:22.225Z
NVD · CVE-2026-77014 · Updated 2026-08-25T15:16:43.187
Red Hat · CVE-2026-77014 · Updated 2026-08-20T08:50:18+00:00 - https://gitlab.gnome.org/GNOME/libsoup/-/merge_requests/550 CVE record · redhat · Updated 2026-08-20T08:21:22.225Z
NVD · CVE-2026-77014 · Updated 2026-08-25T15:16:43.187
Red Hat · CVE-2026-77014 · Updated 2026-08-20T08:50:18+00:00 - https://www.cve.org/CVERecord?id=CVE-2026-77014 Red Hat · CVE-2026-77014 · Updated 2026-08-20T08:50:18+00:00
- https://nvd.nist.gov/vuln/detail/CVE-2026-77014 Red Hat · CVE-2026-77014 · Updated 2026-08-20T08:50:18+00:00
Sources: NVD · CVE.org · All sources and attribution · EPSS