WeeChat (Wee Enhanced Environment for Chat) is a free chat client.

Code

The project this record applies to. Exploit listings stay in References.

• Repository · github.com

Timeline

Detection, updates, and resolution for this record.

1. Aug 21, 2026 · NIST NVD

   Detected

   WeeChat (Wee Enhanced Environment for Chat) is a free chat client. In versions 0.3.1 through 4.9.0, the WeeChat relay authentication uses non-constant-time string comparison functions (weechat_strcasecmp and strcmp) to verify password hashes and plaintext passwords. An attacker can exploit timing differences to extract the server-computed hash character by character, then authenticate using the co

2. Oct 14, 2026 · NIST NVD

   Updated

   WeeChat (Wee Enhanced Environment for Chat) is a free chat client. In versions 0.3.1 through 4.9.0, the WeeChat relay authentication uses non-constant-time string comparison functions (weechat_strcasecmp and strcmp) to verify password hashes and plaintext passwords. An attacker can exploit timing differences to extract the server-computed hash character by character, then authenticate using the co

Sources

• CVE.orgVulnerability recordCVE-2026-53525

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2026-53525

  30-day exploitation probability 0.4%

  first.org
• NIST NVDVulnerability recordCVE-2026-53525

  WeeChat (Wee Enhanced Environment for Chat) is a free chat client. In versions 0.3.1 through 4.9.0, the WeeChat relay authentication uses non-constant-time string comparison functions (weechat_strcasecmp and strcmp) to verify password hashes and plaintext passwords. An attacker c

  nvd.nist.gov

References

• Reference · github.com