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VulnerabilityPublished

CVE-2026-93453: Alinto SOGo · Weak Password Recovery

Affects Alinto SOGoSource CVE Database V5

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Not known to be exploited · CVSS 8.7 High : upgrade to 5.12.11 soon.

Data as of 1 Nov 2026, 22:58 UTC

CVSS 4.0 base score
8.7High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 39% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 5.12.11
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    Public exploit code: GitHub proofs of concept

  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), GitHub proofs of concept, the Metasploit, Exploit-DB and nuclei-templates index as of 1 Nov 2026.

What to do

Upgrade Alinto SOGo to 5.12.11.

Affected software

ProductAffectedFixed in
AlintoSOGoAffected
  • <5.12.11
Fixed in
  • 5.12.11
GitHubSOGopkg:github/SOGoOther threatsAffected
  • <5.12.11
Fixed in
  • 5.12.11

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 Alinto SOGo version 5.12.11 and later. Users should upgrade to version 5.12.11 or newer to remediate this vulnerability. Until upgrading, avoid relying on the Origin header for constructing password reset links or implement server-side validation to ensure links are not redirected to untrusted domains.

Description

CVE-2026-93453 is a high-severity vulnerability in Alinto SOGo versions prior to 5.12.11. The issue arises from the password recovery mechanism using the client-supplied Origin header to build password reset links. This flaw allows unauthenticated attackers to craft malicious Origin headers, causing password reset emails to contain links pointing to attacker-controlled domains. This can potentially enable account takeover by redirecting users to malicious sites during password recovery.

References

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