VulnSocial

CVE-2026-53525Disclosure

LOWCVSS 7.4 · HIGH

Signal is active with 3 mentions in latest observed window

Immediate actions

  • Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

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 correct hash without knowing the password. Version 4.9.1 fixes the issue.

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0.5/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-208

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Threat summary

  • Patch or workaround signal is available
  • 3 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 3 signals
  • Disclosure: 2 classified signals
  • 3 total mentions across 1 day

Deep dive

Activity timeline3 mentions / 1d
01223Mentions · 2026-08-22: 3Patch / Workaround · 2026-08-22: 1Technical Details · 2026-08-22: 308-22
Signal classification2 categories
Disclosure
266.7%
Patch
133.3%
Referenced assets3 URLs
Full discourse3 posts
  • Hugo | DevOps | Cybersecurity 🇱🇻@HugoValters
    Patch

    CVE-2026-53525 - Timing attack in WeeChat relay auth leaks hash, enabling auth bypass. CVSS 7.4. Update to 4.9.1 now. #CVE #WeeChat #infosec https://www.valtersit.com/cve/CVE-2026-53525 #CVE #CVEAlert #infosec #SysAdmin #cybersecurity #Linux #devsecops #devops #developer #sysadmin #100daysofcode #git #github #gitlab #redteam #blueteam #ethicalhacker #ethicalhacking #cybersecurityawareness #cybersecurity #cybersecuritynews #cybersecuritytips #python #hacker #linux #kali #ubuntu #debian #ukraine #spain #ireland #unitedkingdom #canada #finland #estonia #lithuania #ireland #hungary #denmark #norway #malta #mexico #switczerland #iceland #israel

    Post summary

    The post announces a timing‑based authentication bypass vulnerability in WeeChat relay and notes that it has been fixed in version 4.9.1, with no mention of PoC, exploit code, or active attacks.

    00001214
    1.0K followersView on X
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-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 com… https://www.cve.org/CVERecord?id=CVE-2026-53525 ----- Traducción: CVE-2026-53525 Wee… http://infoflow.cloud`

    Post summary

    The tweet briefly announces CVE‑2026‑53525, noting a non‑constant‑time string comparison flaw in WeeChat’s relay authentication, and links to the official CVE record. No PoC, exploit, patch, or active exploitation claims are present.

    0000028
    102 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-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 com… https://www.cve.org/CVERecord?id=CVE-2026-53525

    Post summary

    The tweet announces CVE‑2026‑53525 for WeeChat, noting a non‑constant‑time string comparison flaw in the relay authentication of certain versions, but provides no evidence of PoC, exploitation, or remediation.

    00000945
    58.0K followersView on X

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