CVE-2013-6404
Quassel core (server daemon) in Quassel IRC before 0.9.2 does not properly verify the user ID when accessing user backlogs, which allows…
- 4.0MediumCVSS base score
- 2.1%Exploitation in 30 daysEPSS · top 18% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Quassel core (server daemon) in Quassel IRC before 0.9.2 does not properly verify the user ID when accessing user backlogs, which allows remote authenticated users to read other users' backlogs via the bufferid in (1) 16/select_buffer_by_id.sql, (2) 16/select_buffer_by_id.sql, and (3) 16/select_buffer_by_id.sql in core/SQL/PostgreSQL/.
Timeline
ID reserved
By redhat
- 35 days later
· 35 days later
Published
- 11 years later
· 11 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium4.0 | AV:N/AC:L/Au:S/C:P/I:N/A:N |
- EPSS (exploitation in 30 days)
- 2.1% · top 18% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.0.
Affected products
n/a
- affected n/a
References
References8
- https://github.com/quassel/quassel/commit/a1a24da (opens in a new tab)x_refsource_CONFIRMx_transferred
- openSUSE-SU-2013:1929 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- [oss-security] 20131127 Re: CVE Request: Quassel IRC - manipulated clients can access backlog of all users on a shared core (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- http://quassel-irc.org/node/123 (opens in a new tab)x_refsource_CONFIRMx_transferred
- quasselirc-cve20136404-sec-bypass(89377) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 55640 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- openSUSE-SU-2014:0114 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- 100432 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2013-6225 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2013-6404)Record last updated .