CVE-2019-13956
Discuz!ML 3.2 through 3.4 allows remote attackers to execute arbitrary PHP code via a modified language cookie, as demonstrated by changing 4gH4_0df5_language=en to 4gH4_0df5_language=en'.phpinfo().'; (if the random prefix 4gH4_0df5_ were used).
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.57%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Discuz!ML 3.2 through 3.4 allows remote attackers to execute arbitrary PHP code via a modified language cookie, as demonstrated by changing 4gH4_0df5_language=en to 4gH4_0df5_language=en'.phpinfo().'; (if the random prefix 4gH4_0df5_ were used).
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 4.57% probability · 92th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-94
- Affected
- codersclub/discuz\!ml
- Source
- cve@mitre.org
EPSS 4.6% 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://esoln.net/esoln/blog/2019/06/14/discuzml-v-3-x-code-injection-vulnerability/Exploit, Third Party Advisory
- http://esoln.net/esoln/blog/2019/06/14/discuzml-v-3-x-code-injection-vulnerability/Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.