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VulnerabilityPublished

CVE-2026-101050: heymrun heym · Improper Authentication

Affects heymrun heymSource CVE Database V5

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Not known to be exploited · CVSS 8.3 High : upgrade to 0.0.53 soon.

Data as of 10 Nov 2026, 23:24 UTC

CVSS 4.0 base score
8.3High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 32% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 0.0.53
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 27 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.

What to do

Upgrade heym and heymrun/heym to 0.0.53.

Affected software

ProductAffectedFixed in
heymrunheymAffected
  • <0.0.53
Fixed in
  • 0.0.53
GitHubheymrun/heympkg:github/heymrun/heymOther threatsAffected
  • <0.0.53
Fixed in
  • 0.0.53

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fix is available in heym version 0.0.53 and later. Users should upgrade to version 0.0.53 or newer to remediate this vulnerability. No vendor advisory content was provided to indicate alternative mitigations or temporary fixes.

Description

CVE-2026-101050 is an improper authentication vulnerability in heymrun's heym software versions before 0.0.53. The flaw occurs because the software fails to verify the X-Telegram-Bot-Api-Secret-Token header on Telegram webhook endpoints when credential_id is absent or secret_token is empty. This allows remote unauthenticated attackers to post forged Telegram updates, triggering workflows with the owner's configured credentials and potentially executing actions based on attacker-supplied input.

References

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