SB20261110317 - Anolis OS update for curl
Published: November 10, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 vulnerabilities.
1) Authentication Bypass by Capture-replay (CVE-ID: CVE-2026-11856)
CWE-ID: CWE-294 - Authentication Bypass by Capture-replay
CVSSv4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to bypass authentication by replaying Digest authentication state.
The vulnerability exists due to authentication bypass by capture-replay in libcurl Digest authentication handling when reusing the same handle for a second transfer to a different HTTP origin. A remote attacker can receive a request containing an Authorization header intended for another origin to bypass authentication by replaying Digest authentication state.
The issue affects libcurl but not the curl command line tool. The leaked header does not reveal the other origin, and the exposed state allows replay only for the exact path of the captured request.
2) Exposure of Data Element to Wrong Session (CVE-ID: CVE-2026-8458)
CWE-ID: CWE-488 - Exposure of Data Element to Wrong Session
CVSSv4: 2.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to expose data to the wrong session.
The vulnerability exists due to exposure of data element to wrong session in libcurl connection reuse logic when reusing Negotiate-authenticated connections across different services. A remote user can issue a request that wrongfully reuses an existing authenticated connection to expose data to the wrong session.
The issue only occurs when using the same hostname, port number, and credentials, and when the previous connection remains alive in the connection pool.
3) Insertion of Sensitive Information Into Sent Data (CVE-ID: CVE-2026-8924)
CWE-ID: CWE-201 - Insertion of Sensitive Information Into Sent Data
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to improper cookie domain validation in cookie parsing logic when processing a cookie with a trailing-dot domain for a trailing-dot hostname. A remote attacker can send a specially crafted HTTP response that sets a super cookie to disclose sensitive information.
This issue is exploitable through both libcurl and the curl command line tool, and it bypasses the Public Suffix List check.
4) Authentication Bypass by Capture-replay (CVE-ID: CVE-2026-8927)
CWE-ID: CWE-294 - Authentication Bypass by Capture-replay
CVSSv4: 2.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to impersonate the client to another proxy.
The vulnerability exists due to authentication bypass by capture-replay in libcurl proxy authentication state handling when reusing a libcurl handle for sequential transfers driven by environment-variable proxy configuration. A remote user can receive a leaked Proxy-Authorization header on a subsequent request to impersonate the client to another proxy.
The issue affects libcurl and does not affect the curl command line tool.
5) Authentication Bypass by Primary Weakness (CVE-ID: CVE-2026-8932)
CWE-ID: CWE-305 - Authentication Bypass by Primary Weakness
CVSSv4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to bypass client certificate authentication.
The vulnerability exists due to authentication bypass by primary weakness in libcurl connection reuse logic when reusing a previously established connection after changing mTLS client certificate settings. A remote user can reuse a connection with mismatched client certificate configuration to bypass client certificate authentication.
The issue affects libcurl and does not affect the curl command line tool.
Remediation
Install update from vendor's website.