CVE-2026-109088
libXtst RECORD EnableContext Reply Endless Loop
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
A malicious X server could send malformed RECORD EnableContext reolies that can cause a X client using the parse_reply_call_callback function in libXtst before 1.2.6 to enter a endless loop.
| CWE | CWE-835 |
| Vendor | x.org |
| Product | libxtst |
| Published | Oct 27, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
X.org / libXtst
0 < 1.2.6
References
Credits
Kaya Emre Arikan