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Fencer Intel
medium 4.3

CVE-2011-2192 json

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…

published 2011-07-07 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-2183

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.9%
EPSS 2.9% chance of exploitation in 30 days, percentile 86%
public exploits
0
none known

Summary

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.

Patch / fix

  • apple mac_os_x 10.7.3
  • curl Debian 14, Debian 13, Debian 12 7.21.6-2

debian advisories DEBIAN-CVE-2011-2192

  • curl RHEL 4 7.12.1-17.el4
  • curl RHEL 5 7.15.5-9.el5_6.3
  • curl RHEL 6 7.19.7-26.el6_1.1
  • libcurl RHEL 6 7.19.7-26.el6_1.1

red hat advisories RHSA-2011:0918

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2011-2192 updated cvss 4.3

curl: Improper delegation of client credentials during GSS negotiation

  • Red Hat Enterprise Linux (v. 5.6.z server) curl 7.15.5-9.el5_6.3 Red Hat Enterprise Linux AS version 4 curl 7.12.1-17.el4 Red Hat Enterprise Linux Desktop version 4 curl 7.12.1-17.el4 Red Hat Enterprise Linux ES version 4 curl 7.12.1-17.el4 Red Hat Enterprise Linux Server (v. 6) curl 7.19.7-26.el6_1.1, libcurl 7.19.7-26.el6_1.1 Red Hat Enterprise Linux WS version 4 curl 7.12.1-17.el4
    fixed: vendor fix RHSA-2011:0918

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.88% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-255 Credentials Management Errors

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.