CVE-2018-8741
A directory traversal flaw in SquirrelMail 1.4.22 allows an authenticated attacker to exfiltrate (or potentially delete) files from the hosting server, related to ../ in the att_local_name field in Deliver.class.php.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.21%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A directory traversal flaw in SquirrelMail 1.4.22 allows an authenticated attacker to exfiltrate (or potentially delete) files from the hosting server, related to ../ in the att_local_name field in Deliver.class.php.
- CVSS 3.0
- 8.8 HIGHCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 4.21% probability · 91th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-22
- Affected
- squirrelmail/squirrelmail · debian/debian linux
- Source
- cve@mitre.org
EPSS 4.2% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.openwall.com/lists/oss-security/2018/03/17/2Mailing List, Third Party Advisory
- http://www.securitytracker.com/id/1040554Third Party Advisory, VDB Entry
- https://gist.github.com/hannob/3c4f86863c418930ad08853c1109364ePatch, Third Party Advisory
- https://insinuator.net/2018/03/squirrelmail-full-disclosure-troopers18/Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/04/msg00012.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CVXTYMZ35IC5KPNMAE6BWAQWURMX7KZO/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T5FP5O562A4FM5TCFNEW73SS6PZONSAC/
- https://paste.pound-python.org/show/OjSLiFTxiBrTk63jqEUu/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4168Third Party Advisory
- http://www.openwall.com/lists/oss-security/2018/03/17/2Mailing List, Third Party Advisory
- http://www.securitytracker.com/id/1040554Third Party Advisory, VDB Entry
- https://gist.github.com/hannob/3c4f86863c418930ad08853c1109364ePatch, Third Party Advisory
- https://insinuator.net/2018/03/squirrelmail-full-disclosure-troopers18/Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/04/msg00012.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CVXTYMZ35IC5KPNMAE6BWAQWURMX7KZO/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T5FP5O562A4FM5TCFNEW73SS6PZONSAC/
- https://paste.pound-python.org/show/OjSLiFTxiBrTk63jqEUu/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4168Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.