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VulnerabilityPublished

CVE-2026-82973: psyb0t docker-mailbox · CRLF Injection

Affects psyb0t docker-mailboxSource CVE Database V5

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Not known to be exploited · CVSS 9.4 Critical.

Data as of 12 Nov 2026, 23:24 UTC

CVSS 3.1 base score
9.4Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 36% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 29 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 13 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
psyb0tdocker-mailboxAffected
  • >=0.1.0 <=0.4.12
Fixed in–
GitHubpsyb0t/docker-mailboxpkg:github/psyb0t/docker-mailboxOther threatsAffected
  • >=0.1.0 <=0.4.12
Fixed in–

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

AI-suggested

A fixed version 0.4.13 or later should be applied to remediate this vulnerability. If bearer-token authentication is configured, the attack vector is mitigated. Until patched, configuring bearer-token authentication may reduce exposure.

Description

Improper neutralization of CRLF sequences in IMAP command construction in psyb0t/docker-mailbox before 0.4.13 allows a remote unauthenticated attacker, when bearer-token authentication is not configured, to inject additional IMAP commands into an authenticated upstream mailbox connection via crafted folder, UID, or search values.

References

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