CVE-2025-32908
published 2025-04-14CVE-2025-32908: A flaw was found in libsoup. The HTTP/2 server in libsoup may not fully validate the values of pseudo-headers :scheme, :authority, and :path, which may allow a…
PriorityP336high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.57%
43.5th percentile
A flaw was found in libsoup. The HTTP/2 server in libsoup may not fully validate the values of pseudo-headers :scheme, :authority, and :path, which may allow a user to cause a denial of service (DoS).
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | libsoup2.4 | < libsoup3 3.6.5-2 (forky) | libsoup3 3.6.5-2 (forky) |
| debian | libsoup3 | < libsoup3 3.6.5-2 (forky) | libsoup3 3.6.5-2 (forky) |
| msrc | azl3_libsoup_3.4.4-4_on_azure_linux_3.0 | — | — |
| msrc | azl3_libsoup_3.4.4-6_on_azure_linux_3.0 | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
osv7.5HIGH
vendor_debian7.5LOW
vendor_msrc7.5HIGH
vendor_redhat7.5HIGH
vendor_ubuntu7.5HIGH
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OSV
libsoup3, libsoup2.4 vulnerabilities
osv·2025-05-28·CVSS 7.5
CVE-2025-32908 [HIGH] libsoup3, libsoup2.4 vulnerabilities
libsoup3, libsoup2.4 vulnerabilities
Jan Różański discovered that libsoup incorrectly handled certain headers
when sending HTTP/2 requests over TLS. An attacker could possibly use this
issue to cause a denial of service. This issue only affected libsoup3 in
Ubuntu 24.04 LTS, Ubuntu 24.10, and Ubuntu 25.04. (CVE-2025-32908)
Jan Różański discovered that libsoup incorrectly parsed certain response
headers. An attacker could possibly use this issue to cause a denial of
service. (CVE-2025-4476)
OSV
CVE-2025-32908: A flaw was found in libsoup
osv·2025-04-14·CVSS 7.5
CVE-2025-32908 [HIGH] CVE-2025-32908: A flaw was found in libsoup
A flaw was found in libsoup. The HTTP/2 server in libsoup may not fully validate the values of pseudo-headers :scheme, :authority, and :path, which may allow a user to cause a denial of service (DoS).
GHSA
GHSA-7hqq-7crg-xr49: A flaw was found in libsoup
ghsa_unreviewed·2025-04-14
CVE-2025-32908 [HIGH] CWE-115 GHSA-7hqq-7crg-xr49: A flaw was found in libsoup
A flaw was found in libsoup. The HTTP/2 server in libsoup may not fully validate the values of pseudo-headers :scheme, :authority, and :path, which may allow a user to cause a denial of service (DoS).
Ubuntu
libsoup vulnerabilities
vendor_ubuntu·2025-05-28·CVSS 7.5
CVE-2025-32908 [HIGH] libsoup vulnerabilities
Title: libsoup vulnerabilities
Summary: libsoup could be made to crash if it received specially crafted network
traffic.
Jan Różański discovered that libsoup incorrectly handled certain headers
when sending HTTP/2 requests over TLS. An attacker could possibly use this
issue to cause a denial of service. This issue only affected libsoup3 in
Ubuntu 24.04 LTS, Ubuntu 24.10, and Ubuntu 25.04. (CVE-2025-32908)
Jan Różański discovered that libsoup incorrectly parsed certain response
headers. An attacker could possibly use this issue to cause a denial of
service. (CVE-2025-4476)
Instructions: In general, a standard system update will make all the necessary changes.
Red Hat
libsoup: Denial of service on libsoup through HTTP/2 server
vendor_redhat·2025-04-14·CVSS 7.5
CVE-2025-32908 [HIGH] CWE-115 libsoup: Denial of service on libsoup through HTTP/2 server
libsoup: Denial of service on libsoup through HTTP/2 server
A flaw was found in libsoup. The HTTP/2 server in libsoup may not fully validate the values of pseudo-headers :scheme, :authority, and :path, which may allow a user to cause a denial of service (DoS).
A flaw was found in libsoup. The HTTP/2 server in libsoup may not fully validate the values of pseudo-headers :scheme, :authority, and :path, which may allow a user to cause a denial of service (DoS).
Mitigation: Currently, no mitigation was found for this vulnerability.
Package: libsoup (Red Hat Enterprise Linux 6) - Out of support scope
Package: libsoup (Red Hat Enterprise Linux 7) - Not affected
Package: libsoup (Red Hat Enterprise Linux 8) - Not affected
Package: libsoup (Red Hat Enterprise Linux 9) - Not affected
Microsoft
Libsoup: denial of service on libsoup through http/2 server
vendor_msrc·2025-04-08·CVSS 7.5
CVE-2025-32908 [HIGH] CWE-115 Libsoup: denial of service on libsoup through http/2 server
Libsoup: denial of service on libsoup through http/2 server
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
redhat: redhat
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
Reference: https:/
Debian
CVE-2025-32908: libsoup2.4 - A flaw was found in libsoup. The HTTP/2 server in libsoup may not fully validate...
vendor_debian·2025·CVSS 7.5
CVE-2025-32908 [HIGH] CVE-2025-32908: libsoup2.4 - A flaw was found in libsoup. The HTTP/2 server in libsoup may not fully validate...
A flaw was found in libsoup. The HTTP/2 server in libsoup may not fully validate the values of pseudo-headers :scheme, :authority, and :path, which may allow a user to cause a denial of service (DoS).
Scope: local
bookworm: resolved
bullseye: resolved
trixie: resolved
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-04-14
Published