CVE catalog
CVE-2026-102556
A flaw was found in libsoup. When handling an incoming WebSocket Pong frame, SoupWebsocketConnection emitted the ::pong signal with a GByteArray pointer even though the signal is declared to pass a GB
- Severity
- High · CVSS 8.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.27% · Oct 25, 2026
A flaw was found in libsoup. When handling an incoming WebSocket Pong frame, SoupWebsocketConnection emitted the ::pong signal with a GByteArray pointer even though the signal is declared to pass a GBytes. Applications connecting a handler that follows the documented GBytes API can trigger heap corruption or a crash upon receiving a crafted Pong.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | libsoup3 | sid | 3.8.0-3 | fixed |
| Debian | libsoup3 | forky | 3.8.0-3 | fixed |
| Debian | libsoup3 | trixie | 3.6.5-3 | vulnerable |
| Debian | libsoup3 | bookworm | 3.2.3-0+deb12u2 | vulnerable |
| Debian | libsoup2.4 | trixie | 2.74.3-10.1 | vulnerable |
| Debian | libsoup2.4 | bookworm | 2.74.3-1+deb12u1 | vulnerable |
| Cpe | libsoup | Not reported | 3.7.3 | fixed |
| Cpe | enterprise_linux | Not reported | Not reported | unknown |
| Ubuntu | libsoup2.4 | pro | 2.74.3-10.1ubuntu4 | vulnerable |
| Ubuntu | libsoup2.4 | pro | 2.74.3-10.1ubuntu5 | vulnerable |
| Ubuntu | libsoup2.4 | pro | 2.74.3-10.1ubuntu5+esm1 | vulnerable |
| Ubuntu | libsoup2.4 | pro | 2.74.3-10.1ubuntu5+esm2 | vulnerable |
| Ubuntu | libsoup2.4 | pro | 2.74.3-10.1ubuntu5+esm3 | vulnerable |
| Ubuntu | libsoup2.4 | 22.04 | 2.72.0-3ubuntu3 | vulnerable |
| Ubuntu | libsoup2.4 | 22.04 | 2.74.1-1 | vulnerable |
| Ubuntu | libsoup2.4 | 22.04 | 2.74.2-2 | vulnerable |
| Ubuntu | libsoup2.4 | 22.04 | 2.74.2-3 | vulnerable |
| Ubuntu | libsoup2.4 | 22.04 | 2.74.2-3ubuntu0.1 | vulnerable |
| Ubuntu | libsoup2.4 | 22.04 | 2.74.2-3ubuntu0.2 | vulnerable |
| Ubuntu | libsoup2.4 | 22.04 | 2.74.2-3ubuntu0.3 | vulnerable |
| Ubuntu | libsoup2.4 | 22.04 | 2.74.2-3ubuntu0.4 | vulnerable |
| Ubuntu | libsoup2.4 | 22.04 | 2.74.2-3ubuntu0.5 | vulnerable |
| Ubuntu | libsoup2.4 | 22.04 | 2.74.2-3ubuntu0.6 | vulnerable |
| Ubuntu | libsoup2.4 | 22.04 | 2.74.2-3ubuntu0.7 | vulnerable |
| Ubuntu | libsoup2.4 | 22.04 | 2.74.2-3ubuntu0.8 | vulnerable |
| Ubuntu | libsoup2.4 | 22.04 | 2.74.2-3ubuntu0.9 | vulnerable |
| Ubuntu | libsoup3 | pro | 3.0.4-2 | vulnerable |
| Ubuntu | libsoup3 | pro | 3.0.4-3 | vulnerable |
| Ubuntu | libsoup3 | pro | 3.0.5-1 | vulnerable |
| Ubuntu | libsoup3 | pro | 3.0.7-0ubuntu1 | vulnerable |
| Ubuntu | libsoup3 | pro | 3.0.7-0ubuntu1+esm1 | vulnerable |
| Ubuntu | libsoup3 | pro | 3.0.7-0ubuntu1+esm2 | vulnerable |
| Ubuntu | libsoup3 | pro | 3.0.7-0ubuntu1+esm3 | vulnerable |
| Ubuntu | libsoup3 | pro | 3.0.7-0ubuntu1+esm4 | vulnerable |
| Ubuntu | libsoup3 | pro | 3.0.7-0ubuntu1+esm5 | vulnerable |
| Ubuntu | libsoup3 | pro | 3.0.7-0ubuntu1+esm6 | vulnerable |
| Ubuntu | libsoup3 | pro | 3.0.7-0ubuntu1+esm7 | vulnerable |
| Ubuntu | libsoup3 | pro | 3.0.7-0ubuntu1+esm8 | vulnerable |
| Ubuntu | libsoup3 | pro | 3.0.7-0ubuntu1+esm9 | vulnerable |
| Ubuntu | libsoup2.4 | 24.04 | 2.74.3-1 | vulnerable |
| Ubuntu | libsoup2.4 | 24.04 | 2.74.3-2 | vulnerable |
| Ubuntu | libsoup2.4 | 24.04 | 2.74.3-3 | vulnerable |
| Ubuntu | libsoup2.4 | 24.04 | 2.74.3-6 | vulnerable |
| Ubuntu | libsoup2.4 | 24.04 | 2.74.3-6build1 | vulnerable |
| Ubuntu | libsoup2.4 | 24.04 | 2.74.3-6ubuntu1 | vulnerable |
| Ubuntu | libsoup2.4 | 24.04 | 2.74.3-6ubuntu1.1 | vulnerable |
| Ubuntu | libsoup2.4 | 24.04 | 2.74.3-6ubuntu1.2 | vulnerable |
| Ubuntu | libsoup2.4 | 24.04 | 2.74.3-6ubuntu1.3 | vulnerable |
| Ubuntu | libsoup2.4 | 24.04 | 2.74.3-6ubuntu1.4 | vulnerable |
| Ubuntu | libsoup2.4 | 24.04 | 2.74.3-6ubuntu1.5 | vulnerable |
| Ubuntu | libsoup2.4 | 24.04 | 2.74.3-6ubuntu1.6 | vulnerable |
| Ubuntu | libsoup2.4 | 24.04 | 2.74.3-6ubuntu1.7 | vulnerable |
| Ubuntu | libsoup2.4 | 24.04 | 2.74.3-6ubuntu1.8 | vulnerable |
| Ubuntu | libsoup2.4 | 24.04 | 2.74.3-6ubuntu1.9 | vulnerable |
| Ubuntu | libsoup3 | 24.04 | 3.4.2-4 | vulnerable |
| Ubuntu | libsoup3 | 24.04 | 3.4.4-1 | vulnerable |
| Ubuntu | libsoup3 | 24.04 | 3.4.4-2 | vulnerable |
| Ubuntu | libsoup3 | 24.04 | 3.4.4-4 | vulnerable |
| Ubuntu | libsoup3 | 24.04 | 3.4.4-5 | vulnerable |
| Ubuntu | libsoup3 | 24.04 | 3.4.4-5build1 | vulnerable |
| Ubuntu | libsoup3 | 24.04 | 3.4.4-5build2 | vulnerable |
| Ubuntu | libsoup3 | 24.04 | 3.4.4-5ubuntu0.1 | vulnerable |
| Ubuntu | libsoup3 | 24.04 | 3.4.4-5ubuntu0.2 | vulnerable |
| Ubuntu | libsoup3 | 24.04 | 3.4.4-5ubuntu0.3 | vulnerable |
| Ubuntu | libsoup3 | 24.04 | 3.4.4-5ubuntu0.4 | vulnerable |
| Ubuntu | libsoup3 | 24.04 | 3.4.4-5ubuntu0.5 | vulnerable |
| Ubuntu | libsoup3 | 24.04 | 3.4.4-5ubuntu0.6 | vulnerable |
| Ubuntu | libsoup3 | 24.04 | 3.4.4-5ubuntu0.7 | vulnerable |
| Ubuntu | libsoup3 | 24.04 | 3.4.4-5ubuntu0.8 | vulnerable |
| Ubuntu | libsoup3 | 24.04 | 3.4.4-5ubuntu0.9 | vulnerable |
| Ubuntu | libsoup2.4 | 26.10 | 2.74.3-10.1ubuntu5 | vulnerable |
| Ubuntu | libsoup3 | 26.10 | 3.6.6-1 | vulnerable |
| Ubuntu | libsoup3 | 26.10 | 3.6.6-1ubuntu3 | vulnerable |
| Ubuntu | libsoup3 | 26.04 | 3.6.5-4 | vulnerable |
| Ubuntu | libsoup3 | 26.04 | 3.6.5-5 | vulnerable |
| Ubuntu | libsoup3 | 26.04 | 3.6.5-6 | vulnerable |
| Ubuntu | libsoup3 | 26.04 | 3.6.5-7 | vulnerable |
| Ubuntu | libsoup3 | 26.04 | 3.6.5-9 | vulnerable |
| Ubuntu | libsoup3 | 26.04 | 3.6.6-1 | vulnerable |
| Ubuntu | libsoup3 | 26.04 | 3.6.6-1ubuntu0.1 | vulnerable |
| Suse | libsoup2 | linux enterprise micro 5.3 | 2.74.3-150400.3.43.1 | fixed |
| Suse | libsoup2 | linux enterprise micro 5.4 | 2.74.3-150400.3.43.1 | fixed |
| Suse | libsoup2 | linux enterprise micro 5.5 | 2.74.3-150400.3.43.1 | fixed |
| Suse | libsoup2 | linux enterprise high performance computing 15 sp4-espos | 2.74.3-150400.3.43.1 | fixed |
| Suse | libsoup2 | linux enterprise high performance computing 15 sp4-ltss | 2.74.3-150400.3.43.1 | fixed |
| Suse | libsoup2 | linux enterprise high performance computing 15 sp5-espos | 2.74.3-150400.3.43.1 | fixed |
| Suse | libsoup2 | linux enterprise high performance computing 15 sp5-ltss | 2.74.3-150400.3.43.1 | fixed |
| Suse | libsoup2 | linux enterprise server 15 sp4-ltss | 2.74.3-150400.3.43.1 | fixed |
| Suse | libsoup2 | linux enterprise server 15 sp5-ltss | 2.74.3-150400.3.43.1 | fixed |
| Suse | libsoup2 | linux enterprise server for sap applications 15 sp4 | 2.74.3-150400.3.43.1 | fixed |
| Suse | libsoup2 | linux enterprise server for sap applications 15 sp5 | 2.74.3-150400.3.43.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libsoup3 | source | sid | 3.8.0-1 | not yet assigned | Not reported | Not reported |
| Debian | libsoup3 | source | forky | 3.8.0-1 | not yet assigned | Not reported | Not reported |
| Debian | libsoup3 | source | trixie | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | libsoup3 | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | libsoup2.4 | source | trixie | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | libsoup2.4 | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
| Cpe | libsoup | cpe | Not reported | 3.7.3 | Not reported | NVD-CVE-2026-102556 | Not reported |
| Suse | libsoup2 | rpm | linux enterprise micro 5.3 | 2.74.3-150400.3.43.1 | Not reported | SUSE-SU-2026:4739-1 | Not reported |
| Suse | libsoup2 | rpm | linux enterprise micro 5.4 | 2.74.3-150400.3.43.1 | Not reported | SUSE-SU-2026:4739-1 | Not reported |
| Suse | libsoup2 | rpm | linux enterprise micro 5.5 | 2.74.3-150400.3.43.1 | Not reported | SUSE-SU-2026:4739-1 | Not reported |
| Suse | libsoup2 | rpm | linux enterprise high performance computing 15 sp4-espos | 2.74.3-150400.3.43.1 | Not reported | SUSE-SU-2026:4739-1 | Not reported |
| Suse | libsoup2 | rpm | linux enterprise high performance computing 15 sp4-ltss | 2.74.3-150400.3.43.1 | Not reported | SUSE-SU-2026:4739-1 | Not reported |
| Suse | libsoup2 | rpm | linux enterprise high performance computing 15 sp5-espos | 2.74.3-150400.3.43.1 | Not reported | SUSE-SU-2026:4739-1 | Not reported |
| Suse | libsoup2 | rpm | linux enterprise high performance computing 15 sp5-ltss | 2.74.3-150400.3.43.1 | Not reported | SUSE-SU-2026:4739-1 | Not reported |
| Suse | libsoup2 | rpm | linux enterprise server 15 sp4-ltss | 2.74.3-150400.3.43.1 | Not reported | SUSE-SU-2026:4739-1 | Not reported |
| Suse | libsoup2 | rpm | linux enterprise server 15 sp5-ltss | 2.74.3-150400.3.43.1 | Not reported | SUSE-SU-2026:4739-1 | Not reported |
| Suse | libsoup2 | rpm | linux enterprise server for sap applications 15 sp4 | 2.74.3-150400.3.43.1 | Not reported | SUSE-SU-2026:4739-1 | Not reported |
| Suse | libsoup2 | rpm | linux enterprise server for sap applications 15 sp5 | 2.74.3-150400.3.43.1 | Not reported | SUSE-SU-2026:4739-1 | Not reported |
Notes
[trixie] libsoup3: Minor issue [bookworm] libsoup3: Minor issue [trixie] libsoup2.4: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [gir1.2-soup-2.4]Affected
Source package: [libsoup2.4]
Details (2)
2.74.3-1+deb12u1· amd64 · bookwormAffected
nvd · libsoup2.4 · debian · bookworm; nvd · libsoup2.4 · debian · 12
2.74.3-1+deb12u1· arm64 · bookwormAffected
nvd · libsoup2.4 · debian · bookworm; nvd · libsoup2.4 · debian · 12
- [gir1.2-soup-3.0]Affected
Source package: [libsoup3]
Details (2)
3.2.3-0+deb12u2· amd64 · bookwormAffected
nvd · libsoup3 · debian · bookworm; nvd · libsoup3 · debian · 12
3.2.3-0+deb12u2· arm64 · bookwormAffected
nvd · libsoup3 · debian · bookworm; nvd · libsoup3 · debian · 12
- [libsoup2.4-1]Affected
Source package: [libsoup2.4]
Details (2)
2.74.3-1+deb12u1· amd64 · bookwormAffected
nvd · libsoup2.4 · debian · bookworm; nvd · libsoup2.4 · debian · 12
2.74.3-1+deb12u1· arm64 · bookwormAffected
nvd · libsoup2.4 · debian · bookworm; nvd · libsoup2.4 · debian · 12
- [libsoup2.4-common]Affected
Source package: [libsoup2.4]
Details (2)
2.74.3-1+deb12u1· all · bookwormAffected
nvd · libsoup2.4 · debian · bookworm; nvd · libsoup2.4 · debian · 12
2.74.3-1+deb12u1· all · bookwormAffected
nvd · libsoup2.4 · debian · bookworm; nvd · libsoup2.4 · debian · 12
- [libsoup2.4-dev]Affected
Source package: [libsoup2.4]
Details (2)
2.74.3-1+deb12u1· amd64 · bookwormAffected
nvd · libsoup2.4 · debian · bookworm; nvd · libsoup2.4 · debian · 12
2.74.3-1+deb12u1· arm64 · bookwormAffected
nvd · libsoup2.4 · debian · bookworm; nvd · libsoup2.4 · debian · 12
- [libsoup2.4-doc]Affected
Source package: [libsoup2.4]
Details (2)
2.74.3-1+deb12u1· all · bookwormAffected
nvd · libsoup2.4 · debian · bookworm; nvd · libsoup2.4 · debian · 12
2.74.3-1+deb12u1· all · bookwormAffected
nvd · libsoup2.4 · debian · bookworm; nvd · libsoup2.4 · debian · 12
- [libsoup2.4-tests]Affected
Source package: [libsoup2.4]
Details (2)
2.74.3-1+deb12u1· amd64 · bookwormAffected
nvd · libsoup2.4 · debian · bookworm; nvd · libsoup2.4 · debian · 12
2.74.3-1+deb12u1· arm64 · bookwormAffected
nvd · libsoup2.4 · debian · bookworm; nvd · libsoup2.4 · debian · 12
- [libsoup-3.0-0]Affected
Source package: [libsoup3]
Details (2)
3.2.3-0+deb12u2· amd64 · bookwormAffected
nvd · libsoup3 · debian · bookworm; nvd · libsoup3 · debian · 12
3.2.3-0+deb12u2· arm64 · bookwormAffected
nvd · libsoup3 · debian · bookworm; nvd · libsoup3 · debian · 12
- [libsoup-3.0-common]Affected
Source package: [libsoup3]
Details (2)
3.2.3-0+deb12u2· all · bookwormAffected
nvd · libsoup3 · debian · bookworm; nvd · libsoup3 · debian · 12
3.2.3-0+deb12u2· all · bookwormAffected
nvd · libsoup3 · debian · bookworm; nvd · libsoup3 · debian · 12
- [libsoup-3.0-dev]Affected
Source package: [libsoup3]
Details (2)
3.2.3-0+deb12u2· amd64 · bookwormAffected
nvd · libsoup3 · debian · bookworm; nvd · libsoup3 · debian · 12
3.2.3-0+deb12u2· arm64 · bookwormAffected
nvd · libsoup3 · debian · bookworm; nvd · libsoup3 · debian · 12
- [libsoup-3.0-doc]Affected
Source package: [libsoup3]
Details (2)
3.2.3-0+deb12u2· all · bookwormAffected
nvd · libsoup3 · debian · bookworm; nvd · libsoup3 · debian · 12
3.2.3-0+deb12u2· all · bookwormAffected
nvd · libsoup3 · debian · bookworm; nvd · libsoup3 · debian · 12
- [libsoup-3.0-tests]Affected
Source package: [libsoup3]
Details (2)
3.2.3-0+deb12u2· amd64 · bookwormAffected
nvd · libsoup3 · debian · bookworm; nvd · libsoup3 · debian · 12
3.2.3-0+deb12u2· arm64 · bookwormAffected
nvd · libsoup3 · debian · bookworm; nvd · libsoup3 · debian · 12
- [libsoup-gnome2.4-1]Affected
Source package: [libsoup2.4]
Details (2)
2.74.3-1+deb12u1· amd64 · bookwormAffected
nvd · libsoup2.4 · debian · bookworm; nvd · libsoup2.4 · debian · 12
2.74.3-1+deb12u1· arm64 · bookwormAffected
nvd · libsoup2.4 · debian · bookworm; nvd · libsoup2.4 · debian · 12
- [libsoup-gnome2.4-dev]Affected
Source package: [libsoup2.4]
Details (2)
2.74.3-1+deb12u1· amd64 · bookwormAffected
nvd · libsoup2.4 · debian · bookworm; nvd · libsoup2.4 · debian · 12
2.74.3-1+deb12u1· arm64 · bookwormAffected
nvd · libsoup2.4 · debian · bookworm; nvd · libsoup2.4 · debian · 12
[Debian 13 (Trixie)]
- [gir1.2-soup-2.4]Affected
Source package: [libsoup2.4]
Details (2)
2.74.3-10.1· amd64 · trixieAffected
nvd · libsoup2.4 · debian · 13
2.74.3-10.1· arm64 · trixieAffected
nvd · libsoup2.4 · debian · 13
- [gir1.2-soup-3.0]Affected
Source package: [libsoup3]
Details (2)
3.6.5-3· amd64 · trixieAffected
nvd · libsoup3 · debian · 13
3.6.5-3· arm64 · trixieAffected
nvd · libsoup3 · debian · 13
- [libsoup-2.4-1]Affected
Source package: [libsoup2.4]
Details (2)
2.74.3-10.1· amd64 · trixieAffected
nvd · libsoup2.4 · debian · 13
2.74.3-10.1· arm64 · trixieAffected
nvd · libsoup2.4 · debian · 13
- [libsoup2.4-common]Affected
Source package: [libsoup2.4]
Details (2)
2.74.3-10.1· all · trixieAffected
nvd · libsoup2.4 · debian · 13
2.74.3-10.1· all · trixieAffected
nvd · libsoup2.4 · debian · 13
- [libsoup2.4-dev]Affected
Source package: [libsoup2.4]
Details (2)
2.74.3-10.1· amd64 · trixieAffected
nvd · libsoup2.4 · debian · 13
2.74.3-10.1· arm64 · trixieAffected
nvd · libsoup2.4 · debian · 13
- [libsoup2.4-doc]Affected
Source package: [libsoup2.4]
Details (2)
2.74.3-10.1· all · trixieAffected
nvd · libsoup2.4 · debian · 13
2.74.3-10.1· all · trixieAffected
nvd · libsoup2.4 · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_12084-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-102556]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-102556]
- [https://osv.dev/vulnerability/SUSE-SU-2026:4739-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-102556]
- [https://security-tracker.debian.org/tracker/CVE-2026-102556]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-102556.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3952.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]