Out-of-Bounds Read in libsoup package (CVE-2025-4969)
Summary
Vulnerability in libsoup package (CVE-2025-4969). Risk of unauthorized operations or information disclosure.
Original description
The description as published by the source.
A vulnerability was found in the libsoup package. This flaw stems from its failure to correctly verify the termination of multipart HTTP messages. This can allow a remote attacker to send a specially crafted multipart HTTP body, causing the libsoup-consuming server to read beyond its allocated memory boundaries (out-of-bounds read).
Source: NIST National Vulnerability Database NVD
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2025-4969 has been found in libsoup package.
Risk of unauthorized operations or information disclosure. CVSS score: 6.5/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "libsoup package CVE-2025-4969" on the vendor's site.
CVE-2025-4969 (libsoup package) — CWE-125 / CVSS v3 6.5
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
Out-of-bounds read (CWE-125) exists in libsoup package.
Check the vendor advisory for the affected versions of libsoup package.
Severity: Medium (CVSS 6.5/10). Risk of unauthorized operations or information disclosure.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで libsoup package を使っているサービスとバージョンを洗い出す。
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2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2025-4969 libsoup2.4 Fixed in: 2.72.0-2+deb11u3
- Ubuntu UBUNTU-CVE-2025-4969 libsoup2.4 Fixed in: 2.52.2-1ubuntu0.3+esm5
References
- advisory access.redhat.com
- advisory github.com
- advisory nvd.nist.gov
- package gitlab.gnome.org
- report bugzilla.redhat.com
- report gitlab.gnome.org
- web access.redhat.com