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CVE

CURL-CVE-2026-11856

cross-origin Digest auth state leak
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CVE

CURL-CVE-2026-11856

cross-origin Digest auth state leak

Successfully using libcurl to do a transfer to a specific HTTP origin

(hostA) with Digest authentication and then changing the origin to a

different one (hostB) for a second transfer, reusing the same handle, makes

libcurl wrongly pass on the Authorization: header field meant for hostA,

to hostB.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.8
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

Severity

9.8

CVSS Score
0
10

Basic Information

Base CVSS
9.8
EPSS Probability
0.01064%
EPSS Percentile
0.60745%
Introduced Version
7.10.6,334d78cd18a7310144383929bdcef34ffbf6159b
Fix Available
8.21.0,5c6b4880357ab3e72967c1c45cae0f96ffabc535

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