An issue in provider/libserver/ECKrbAuth.cpp of Kopano Core <= v11.0.2.51 contains an…
Priority MEDIUM 46CWE-287Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-287.
Summary
An issue in provider/libserver/ECKrbAuth.cpp of Kopano Core <= v11.0.2.51 contains an issue which allows attackers to authenticate even if the user account or password is expired. It also exists in the predecessor Zarafa Collaboration Platform (ZCP) in provider/libserver/ECPamAuth.cpp of Zarafa >= 6.30 (introduced between 6.30.0 RC1e and 6.30.8 final).
Why it matters now
EPSS 0.02154 82nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2022-26562
- 2026-10-03 Alias added: GHSA-24g4-fh3x-4f5h
References
Exploit 1
Advisory 1
Other 6
- [debian-lts-announce] 20230306 [SECURITY] [DLA 3354-1] kopanocore security update
- https://jira.kopano.io/browse/KC-2021
- https://github.com/Kopano-dev/kopano-core/blob/master/provider/libserver/ECKrbAuth.cpp#L137
- https://bugzilla.redhat.com/show_bug.cgi?id=2192126
- https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2023-342b96903b
- https://src.fedoraproject.org/rpms/zarafa/c/a5a8366ccf07f248fae6edffb5123cfda579bfdb?branch=epel7
More Kopano Groupware Core vulnerabilities
- TI-2019-14354 HrAddFBBlock in libfreebusy/freebusyutil.cpp in Kopano Groupware Core before 8.7.7 allows… CVSS 3.1CRITICAL 9.8
- TI-2021-09904 kopano-ical (formerly zarafa-ical) in Kopano Groupware Core through 8.7.16, 9.x through… CVSS 3.1HIGH 7.5
Sources
- CVE-2022-26562 · CVE Program
- CVE-2022-26562 · NVD
- FIRST EPSS
- GHSA-24g4-fh3x-4f5h · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences