Low severity3.7NVD Advisory· Published Apr 23, 2026· Updated May 4, 2026
CVE-2026-2708
CVE-2026-2708
Description
A request smuggling vulnerability exists in libsoup's HTTP/1 header parsing logic. The soup_message_headers_append_common() function in libsoup/soup-message-headers.c unconditionally appends each header value without validating for duplicate or conflicting Content-Length fields. This allows an attacker to send HTTP requests containing multiple Content-Length headers with differing values.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
45- cpe:2.3:a:gnome:libsoup:-:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*+ 4 more
- cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
- osv-coords39 versionspkg:rpm/opensuse/libsoup2&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/libsoup2&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/libsoup2&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/libsoup&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/libsoup&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/libsoup&distro=openSUSE%20Tumbleweedpkg:rpm/suse/libsoup2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/libsoup2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/libsoup2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/libsoup2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/libsoup2&distro=SUSE%20Linux%20Enterprise%20Micro%205.3pkg:rpm/suse/libsoup2&distro=SUSE%20Linux%20Enterprise%20Micro%205.4pkg:rpm/suse/libsoup2&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/libsoup2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/libsoup2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/libsoup2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/libsoup2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP6-LTSSpkg:rpm/suse/libsoup2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/libsoup2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/libsoup2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP6pkg:rpm/suse/libsoup&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/libsoup&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/libsoup&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/libsoup&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/libsoup&distro=SUSE%20Linux%20Enterprise%20Micro%205.2pkg:rpm/suse/libsoup&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/libsoup&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/libsoup&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/libsoup&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/libsoup&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP6-LTSSpkg:rpm/suse/libsoup&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/libsoup&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/libsoup&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/libsoup&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP6pkg:rpm/suse/libsoup&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/libsoup&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/libsoup&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/libsoup&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/libsoup&distro=SUSE%20Linux%20Micro%206.2
< 2.74.3-150600.4.27.1+ 38 more
- (no CPE)range: < 2.74.3-150600.4.27.1
- (no CPE)range: < 2.74.3-160000.4.1
- (no CPE)range: < 2.74.3-17.1
- (no CPE)range: < 3.4.4-150600.3.34.1
- (no CPE)range: < 3.6.6-160000.1.1
- (no CPE)range: < 3.6.6-1.1
- (no CPE)range: < 2.74.2-150400.3.31.1
- (no CPE)range: < 2.74.2-150400.3.31.1
- (no CPE)range: < 2.74.2-150400.3.31.1
- (no CPE)range: < 2.74.2-150400.3.31.1
- (no CPE)range: < 2.74.2-150400.3.31.1
- (no CPE)range: < 2.74.2-150400.3.31.1
- (no CPE)range: < 2.74.2-150400.3.31.1
- (no CPE)range: < 2.74.3-150600.4.27.1
- (no CPE)range: < 2.74.2-150400.3.31.1
- (no CPE)range: < 2.74.2-150400.3.31.1
- (no CPE)range: < 2.74.3-150600.4.27.1
- (no CPE)range: < 2.74.2-150400.3.31.1
- (no CPE)range: < 2.74.2-150400.3.31.1
- (no CPE)range: < 2.74.3-150600.4.27.1
- (no CPE)range: < 3.0.4-150400.3.34.1
- (no CPE)range: < 3.0.4-150400.3.34.1
- (no CPE)range: < 3.0.4-150400.3.34.1
- (no CPE)range: < 3.0.4-150400.3.34.1
- (no CPE)range: < 2.68.4-150200.4.30.1
- (no CPE)range: < 3.4.4-150600.3.34.1
- (no CPE)range: < 2.62.2-5.34.1
- (no CPE)range: < 3.0.4-150400.3.34.1
- (no CPE)range: < 3.0.4-150400.3.34.1
- (no CPE)range: < 3.4.4-150600.3.34.1
- (no CPE)range: < 3.6.6-160000.1.1
- (no CPE)range: < 3.0.4-150400.3.34.1
- (no CPE)range: < 3.0.4-150400.3.34.1
- (no CPE)range: < 3.4.4-150600.3.34.1
- (no CPE)range: < 3.6.6-160000.1.1
- (no CPE)range: < 2.62.2-5.34.1
- (no CPE)range: < 3.4.2-13.1
- (no CPE)range: < 3.4.4-slfo.1.1_7.1
- (no CPE)range: < 3.6.6-160000.1.1
Patches
Vulnerability mechanics
References
4- gitlab.gnome.org/GNOME/libsoup/-/issues/500nvdExploitIssue TrackingVendor Advisory
- access.redhat.com/security/cve/CVE-2026-2708nvdVendor Advisory
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingVendor Advisory
- gitlab.gnome.org/GNOME/libsoup/-/merge_requests/513nvdIssue Tracking
News mentions
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