CVE-2018-19274
Passing an absolute path to a file_exists check in phpBB before 3.2.4 allows Remote Code Execution through Object Injection by employing Phar deserialization when an attacker has access to the Admin Control Panel with founder permissions.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (5.20%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Passing an absolute path to a file_exists check in phpBB before 3.2.4 allows Remote Code Execution through Object Injection by employing Phar deserialization when an attacker has access to the Admin Control Panel with founder permissions.
- CVSS 3.1
- 7.2 HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 5.20% probability · 92th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-502, CWE-1321
- Affected
- phpbb/phpbb · debian/debian linux
- Source
- cve@mitre.org
EPSS 5.2% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://blog.ripstech.com/2018/phpbb3-phar-deserialization-to-remote-code-execution/Exploit, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/11/msg00029.htmlMailing List, Third Party Advisory
- https://www.phpbb.com/community/viewtopic.php?f=14&t=2492206Patch, Vendor Advisory
- https://blog.ripstech.com/2018/phpbb3-phar-deserialization-to-remote-code-execution/Exploit, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/11/msg00029.htmlMailing List, Third Party Advisory
- https://www.phpbb.com/community/viewtopic.php?f=14&t=2492206Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.