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CVE-2026-35661

MEDIUMCVSS 6.9/10EPSS 0.29%

Last modified

CVE-2026-35661 is a medium-severity vulnerability rated 6.9/10 on the CVSS scale. OpenClaw before 2026.3.25 contains an authorization bypass vulnerability in Telegram callback query handling that allows attackers to mutate session state without satisfying normal DM pairing requirements. Remote attackers can exploit weaker callback-only authorization in direct messages to bypass DM pairing and modify session state.. EPSS estimates a 0.29% chance of exploitation in the next 30 days.

Description

OpenClaw before 2026.3.25 contains an authorization bypass vulnerability in Telegram callback query handling that allows attackers to mutate session state without satisfying normal DM pairing requirements. Remote attackers can exploit weaker callback-only authorization in direct messages to bypass DM pairing and modify session state.

Metrics

CVSS 3.1
5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS 4.0
6.9/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability
0.29%

20.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
OpenclawOpenclaw< 2026.3.25

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2026-35661?
OpenClaw before 2026.3.25 contains an authorization bypass vulnerability in Telegram callback query handling that allows attackers to mutate session state without satisfying normal DM pairing requirements. Remote attackers can exploit weaker callback-only authorization in direct messages to bypass DM pairing and modify session state.
How severe is CVE-2026-35661?
CVE-2026-35661 has a CVSS score of 6.9/10 (MEDIUM severity). The EPSS model estimates a 0.29% probability of exploitation in the next 30 days.
How do I fix CVE-2026-35661?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-35661?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST