Medium 4.3Published Jul 7, 2011

CVE-2011-2192The Curl_input_negotiate function in http_negotiate.c in libcurl 7.10.6 through 7.21.6, as used in curl and other products, always performs credential delegation during GSSAPI authentication, which a…

Updated under an hour ago (Nov 2, 2026, 12:10 AM ET)

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It affects haxx libcurl and 4 other products. Add what you run to find out whether that includes you.

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The Curl_input_negotiate function in http_negotiate.c in libcurl 7.10.6 through 7.21.6, as used in curl and other products, always performs credential delegation during GSSAPI authentication, which allows remote servers to impersonate clients via GSSAPI requests.

CVSS: 4.3 MEDIUM (v2.0, NVD)AV:N/AC:M/Au:N/C:P/I:N/A:N
Weakness (CWE): CWE-255
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

haxx libcurl haxx:libcurl	from 7.10.6 through 7.21.6	NVD
apple mac_os_x apple:mac_os_x	before 10.7.3	NVD
fedoraproject fedora fedoraproject:fedora	14; 15	NVD
debian debian_linux debian:debian_linux	5.0; 6.0; 7.0	NVD
canonical ubuntu_linux canonical:ubuntu_linux	8.04; 10.04; 10.10; 11.04	NVD

References

References

http://curl.haxx.se/curl-gssapi-delegation.patch	broken-link
http://curl.haxx.se/docs/adv_20110623.html	vendor-advisory
http://lists.apple.com/archives/security-announce/2012/Feb/msg00000.html	mailing-list, third-party-advisory
http://lists.fedoraproject.org/pipermail/package-announce/2011-July/062287.html	mailing-list, third-party-advisory
http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061992.html	mailing-list, third-party-advisory
http://secunia.com/advisories/45047	third-party-advisory
http://secunia.com/advisories/45067	third-party-advisory
http://secunia.com/advisories/45088	third-party-advisory
http://secunia.com/advisories/45144	third-party-advisory
http://secunia.com/advisories/45181	third-party-advisory
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.