High severity7.5NVD Advisory· Published May 13, 2026· Updated May 14, 2026
CVE-2026-6276
CVE-2026-6276
Description
Using libcurl, when a custom Host: header is first set for an HTTP request and a second request is subsequently done using the same *easy handle* but without the custom Host: header set, the second request would use stale information and pass on cookies meant for the first host in the second request. Leak them.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
9- osv-coords7 versionspkg:rpm/opensuse/curl&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/curl&distro=openSUSE%20Tumbleweedpkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/curl&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/curl&distro=SUSE%20Linux%20Micro%206.2pkg:rpm/suse/curl-mini&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/curl-mini&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0
< 8.14.1-160000.6.1+ 6 more
- (no CPE)range: < 8.14.1-160000.6.1
- (no CPE)range: < 8.20.0-1.1
- (no CPE)range: < 8.14.1-160000.6.1
- (no CPE)range: < 8.14.1-160000.6.1
- (no CPE)range: < 8.14.1-160000.6.1
- (no CPE)range: < 8.14.1-160000.6.1
- (no CPE)range: < 8.14.1-160000.6.1
Patches
Vulnerability mechanics
References
4- curl.se/docs/CVE-2026-6276.htmlnvdPatchVendor Advisory
- hackerone.com/reports/3671818nvdExploitIssue TrackingThird Party Advisory
- www.openwall.com/lists/oss-security/2026/04/29/13nvdMailing ListThird Party Advisory
- curl.se/docs/CVE-2026-6276.jsonnvdProduct
News mentions
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