CVE catalog

CVE-2026-6324

Severity: High · CVSS 7.6CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
Published: Jan 27, 2026, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.87% · Oct 25, 2026

A flaw was found in libsoup. A remote attacker could exploit an unsigned to signed conversion error in the `soup_body_input_stream_read_chunked()` function by sending a malicious HTTP request. This vulnerability occurs when libsoup operates behind a non-libsoup proxy server or as a proxy in front of a non-libsoup backend server. Successful exploitation can allow an attacker to bypass security controls, poison web caches, or gain unauthorized access.

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	libsoup2.4	Not reported	Not reported	vulnerable
Cpe	libsoup3	Not reported	Not reported	vulnerable
Ubuntu	libsoup2.4	noble	`2.74.3-6ubuntu1.9`	fixed
Ubuntu	libsoup3	noble	`3.4.4-5ubuntu0.9`	fixed
Ubuntu	gir1.2-soup-2.4	noble	`2.74.3-6ubuntu1.9`	fixed
Ubuntu	gir1.2-soup-3.0	noble	`3.4.4-5ubuntu0.9`	fixed
Ubuntu	libsoup-2.4-1	noble	`2.74.3-6ubuntu1.9`	fixed
Ubuntu	libsoup-3.0-0	noble	`3.4.4-5ubuntu0.9`	fixed
Ubuntu	libsoup-3.0-common	noble	`3.4.4-5ubuntu0.9`	fixed
Ubuntu	libsoup-3.0-dev	noble	`3.4.4-5ubuntu0.9`	fixed
Ubuntu	libsoup-3.0-doc	noble	`3.4.4-5ubuntu0.9`	fixed
Ubuntu	libsoup-3.0-tests	noble	`3.4.4-5ubuntu0.9`	fixed
Ubuntu	libsoup-gnome-2.4-1	noble	`2.74.3-6ubuntu1.9`	fixed
Ubuntu	libsoup-gnome2.4-dev	noble	`2.74.3-6ubuntu1.9`	fixed
Ubuntu	libsoup2.4-common	noble	`2.74.3-6ubuntu1.9`	fixed
Ubuntu	libsoup2.4-dev	noble	`2.74.3-6ubuntu1.9`	fixed
Ubuntu	libsoup2.4-doc	noble	`2.74.3-6ubuntu1.9`	fixed
Ubuntu	libsoup2.4-tests	noble	`2.74.3-6ubuntu1.9`	fixed
Ubuntu	libsoup2.4	pro	`2.68.2-0ubuntu1`	vulnerable
Ubuntu	libsoup2.4	pro	`2.68.2-1`	vulnerable
Ubuntu	libsoup2.4	pro	`2.68.2-2`	vulnerable
Ubuntu	libsoup2.4	pro	`2.68.2-2build2`	vulnerable
Ubuntu	libsoup2.4	pro	`2.69.90-1`	vulnerable
Ubuntu	libsoup2.4	pro	`2.70.0-1`	vulnerable
Ubuntu	libsoup2.4	pro	`2.70.0-1ubuntu0.1`	vulnerable
Ubuntu	libsoup2.4	pro	`2.70.0-1ubuntu0.2`	vulnerable
Ubuntu	libsoup2.4	pro	`2.70.0-1ubuntu0.3`	vulnerable
Ubuntu	libsoup2.4	pro	`2.70.0-1ubuntu0.4`	vulnerable
Ubuntu	libsoup2.4	pro	`2.70.0-1ubuntu0.5`	vulnerable
Ubuntu	libsoup2.4	pro	`2.70.0-1ubuntu0.5+esm1`	vulnerable
Ubuntu	libsoup2.4	pro	`2.70.0-1ubuntu0.5+esm2`	vulnerable
Ubuntu	libsoup2.4	pro	`2.70.0-1ubuntu0.5+esm3`	vulnerable
Ubuntu	libsoup2.4	pro	`2.70.0-1ubuntu0.5+esm4`	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`	fixed
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`	fixed
Ubuntu	libsoup2.4	25.10	`2.74.3-10`	vulnerable
Ubuntu	libsoup2.4	25.10	`2.74.3-10.1`	vulnerable
Ubuntu	libsoup2.4	25.10	`2.74.3-10.1ubuntu1`	vulnerable
Ubuntu	libsoup2.4	25.10	`2.74.3-10.1ubuntu2`	vulnerable
Ubuntu	libsoup2.4	25.10	`2.74.3-10.1ubuntu3`	vulnerable
Ubuntu	libsoup2.4	25.10	`2.74.3-10.1ubuntu4`	vulnerable
Ubuntu	libsoup2.4	25.10	`2.74.3-10.1ubuntu4.1`	vulnerable
Ubuntu	libsoup3	25.10	`3.6.5-1`	vulnerable
Ubuntu	libsoup3	25.10	`3.6.5-1ubuntu1`	vulnerable
Ubuntu	libsoup3	25.10	`3.6.5-3`	vulnerable
Ubuntu	libsoup3	25.10	`3.6.5-4`	vulnerable
Ubuntu	libsoup3	25.10	`3.6.5-4ubuntu0.1`	vulnerable
Ubuntu	libsoup3	25.10	`3.6.5-4ubuntu0.2`	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`	fixed
Ubuntu	libsoup2.4	26.04	`2.74.3-10.1ubuntu4`	vulnerable
Ubuntu	libsoup2.4	26.04	`2.74.3-10.1ubuntu5`	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`	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	[1138213]
Debian	libsoup3	source	forky	`3.8.0-1`	not yet assigned	Not reported	[1138213]
Debian	libsoup3	source	trixie	`(unfixed)`	not yet assigned	Not reported	[1138213]
Debian	libsoup3	source	bookworm	`(unfixed)`	not yet assigned	Not reported	[1138213]
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
Ubuntu	libsoup2.4	deb	noble	`2.74.3-6ubuntu1.9`	Not reported	Not reported	Not reported
Ubuntu	libsoup3	deb	noble	`3.4.4-5ubuntu0.9`	Not reported	Not reported	Not reported
Ubuntu	gir1.2-soup-2.4	deb	noble	`2.74.3-6ubuntu1.9`	Not reported	Not reported	Not reported
Ubuntu	gir1.2-soup-3.0	deb	noble	`3.4.4-5ubuntu0.9`	Not reported	Not reported	Not reported
Ubuntu	libsoup-2.4-1	deb	noble	`2.74.3-6ubuntu1.9`	Not reported	Not reported	Not reported
Ubuntu	libsoup-3.0-0	deb	noble	`3.4.4-5ubuntu0.9`	Not reported	Not reported	Not reported
Ubuntu	libsoup-3.0-common	deb	noble	`3.4.4-5ubuntu0.9`	Not reported	Not reported	Not reported
Ubuntu	libsoup-3.0-dev	deb	noble	`3.4.4-5ubuntu0.9`	Not reported	Not reported	Not reported
Ubuntu	libsoup-3.0-doc	deb	noble	`3.4.4-5ubuntu0.9`	Not reported	Not reported	Not reported
Ubuntu	libsoup-3.0-tests	deb	noble	`3.4.4-5ubuntu0.9`	Not reported	Not reported	Not reported
Ubuntu	libsoup-gnome-2.4-1	deb	noble	`2.74.3-6ubuntu1.9`	Not reported	Not reported	Not reported
Ubuntu	libsoup-gnome2.4-dev	deb	noble	`2.74.3-6ubuntu1.9`	Not reported	Not reported	Not reported
Ubuntu	libsoup2.4-common	deb	noble	`2.74.3-6ubuntu1.9`	Not reported	Not reported	Not reported
Ubuntu	libsoup2.4-dev	deb	noble	`2.74.3-6ubuntu1.9`	Not reported	Not reported	Not reported
Ubuntu	libsoup2.4-doc	deb	noble	`2.74.3-6ubuntu1.9`	Not reported	Not reported	Not reported
Ubuntu	libsoup2.4-tests	deb	noble	`2.74.3-6ubuntu1.9`	Not reported	Not reported	Not reported
Ubuntu	libsoup3	deb	pro	`3.0.7-0ubuntu1+esm9`	Not reported	UBUNTU-CVE-2026-6324	Not reported
Ubuntu	libsoup3	deb	24.04	`3.4.4-5ubuntu0.9`	Not reported	UBUNTU-CVE-2026-6324	Not reported
Ubuntu	libsoup3	deb	26.10	`3.6.6-1ubuntu3`	Not reported	UBUNTU-CVE-2026-6324	Not reported
Ubuntu	libsoup3	deb	26.04	`3.6.6-1ubuntu0.1`	Not reported	UBUNTU-CVE-2026-6324	Not reported

[Debian bug #1138213]

Notes

[trixie] libsoup3: Minor issue [bookworm] libsoup3: Minor issue [trixie] libsoup2.4: Minor issue [bookworm] 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 · bookworm
  Affected
  nvd · libsoup2.4 · debian · bookworm; nvd · libsoup2.4 · debian · 12
- 2.74.3-1+deb12u1 · arm64 · bookworm
  Affected
  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 · bookworm
  Affected
  nvd · libsoup3 · debian · bookworm; nvd · libsoup3 · debian · 12
- 3.2.3-0+deb12u2 · arm64 · bookworm
  Affected
  nvd · libsoup3 · debian · bookworm; nvd · libsoup3 · debian · 12
[libsoup2.4-1]Affected
Source package: [libsoup2.4]
Details (2)
- 2.74.3-1+deb12u1 · amd64 · bookworm
  Affected
  nvd · libsoup2.4 · debian · bookworm; nvd · libsoup2.4 · debian · 12
- 2.74.3-1+deb12u1 · arm64 · bookworm
  Affected
  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 · bookworm
  Affected
  nvd · libsoup2.4 · debian · bookworm; nvd · libsoup2.4 · debian · 12
- 2.74.3-1+deb12u1 · all · bookworm
  Affected
  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 · bookworm
  Affected
  nvd · libsoup2.4 · debian · bookworm; nvd · libsoup2.4 · debian · 12
- 2.74.3-1+deb12u1 · arm64 · bookworm
  Affected
  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 · bookworm
  Affected
  nvd · libsoup2.4 · debian · bookworm; nvd · libsoup2.4 · debian · 12
- 2.74.3-1+deb12u1 · all · bookworm
  Affected
  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 · bookworm
  Affected
  nvd · libsoup2.4 · debian · bookworm; nvd · libsoup2.4 · debian · 12
- 2.74.3-1+deb12u1 · arm64 · bookworm
  Affected
  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 · bookworm
  Affected
  nvd · libsoup3 · debian · bookworm; nvd · libsoup3 · debian · 12
- 3.2.3-0+deb12u2 · arm64 · bookworm
  Affected
  nvd · libsoup3 · debian · bookworm; nvd · libsoup3 · debian · 12
[libsoup-3.0-common]Affected
Source package: [libsoup3]
Details (2)
- 3.2.3-0+deb12u2 · all · bookworm
  Affected
  nvd · libsoup3 · debian · bookworm; nvd · libsoup3 · debian · 12
- 3.2.3-0+deb12u2 · all · bookworm
  Affected
  nvd · libsoup3 · debian · bookworm; nvd · libsoup3 · debian · 12
[libsoup-3.0-dev]Affected
Source package: [libsoup3]
Details (2)
- 3.2.3-0+deb12u2 · amd64 · bookworm
  Affected
  nvd · libsoup3 · debian · bookworm; nvd · libsoup3 · debian · 12
- 3.2.3-0+deb12u2 · arm64 · bookworm
  Affected
  nvd · libsoup3 · debian · bookworm; nvd · libsoup3 · debian · 12
[libsoup-3.0-doc]Affected
Source package: [libsoup3]
Details (2)
- 3.2.3-0+deb12u2 · all · bookworm
  Affected
  nvd · libsoup3 · debian · bookworm; nvd · libsoup3 · debian · 12
- 3.2.3-0+deb12u2 · all · bookworm
  Affected
  nvd · libsoup3 · debian · bookworm; nvd · libsoup3 · debian · 12
[libsoup-3.0-tests]Affected
Source package: [libsoup3]
Details (2)
- 3.2.3-0+deb12u2 · amd64 · bookworm
  Affected
  nvd · libsoup3 · debian · bookworm; nvd · libsoup3 · debian · 12
- 3.2.3-0+deb12u2 · arm64 · bookworm
  Affected
  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 · bookworm
  Affected
  nvd · libsoup2.4 · debian · bookworm; nvd · libsoup2.4 · debian · 12
- 2.74.3-1+deb12u1 · arm64 · bookworm
  Affected
  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 · bookworm
  Affected
  nvd · libsoup2.4 · debian · bookworm; nvd · libsoup2.4 · debian · 12
- 2.74.3-1+deb12u1 · arm64 · bookworm
  Affected
  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 · trixie
  Affected
  nvd · libsoup2.4 · debian · 13
- 2.74.3-10.1 · arm64 · trixie
  Affected
  nvd · libsoup2.4 · debian · 13
[gir1.2-soup-3.0]Affected
Source package: [libsoup3]
Details (2)
- 3.6.5-3 · amd64 · trixie
  Affected
  nvd · libsoup3 · debian · 13
- 3.6.5-3 · arm64 · trixie
  Affected
  nvd · libsoup3 · debian · 13
[libsoup-2.4-1]Affected
Source package: [libsoup2.4]
Details (2)
- 2.74.3-10.1 · amd64 · trixie
  Affected
  nvd · libsoup2.4 · debian · 13
- 2.74.3-10.1 · arm64 · trixie
  Affected
  nvd · libsoup2.4 · debian · 13
[libsoup2.4-common]Affected
Source package: [libsoup2.4]
Details (2)
- 2.74.3-10.1 · all · trixie
  Affected
  nvd · libsoup2.4 · debian · 13
- 2.74.3-10.1 · all · trixie
  Affected
  nvd · libsoup2.4 · debian · 13
[libsoup2.4-dev]Affected
Source package: [libsoup2.4]
Details (2)
- 2.74.3-10.1 · amd64 · trixie
  Affected
  nvd · libsoup2.4 · debian · 13
- 2.74.3-10.1 · arm64 · trixie
  Affected
  nvd · libsoup2.4 · debian · 13
[libsoup2.4-doc]Affected
Source package: [libsoup2.4]
Details (2)
- 2.74.3-10.1 · all · trixie
  Affected
  nvd · libsoup2.4 · debian · 13
- 2.74.3-10.1 · all · trixie
  Affected
  nvd · libsoup2.4 · debian · 13

Next results

Observed: Oct 23, 2026, 9:49:35 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [Ubuntu Security Notices (USN)]