What is CVE-2019-13956?

CVE-2019-13956 is a critical-severity vulnerability in Codersclub Discuz\!ml, classified under Code Injection. CVSS score: 9.8/10. Published 2019-07-18.

How severe is CVE-2019-13956?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2019-13956 known to be exploited?

8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Codersclub Discuz\!ml

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).

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.046 (90.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Codersclub Discuz\!ml
N/a — versions n/a

Weakness classification (CWE)

CWE-94 — Code Injection

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2019-13956?: CVE-2019-13956 is a critical-severity vulnerability in Codersclub Discuz\!ml, classified under Code Injection. CVSS score: 9.8/10. Published 2019-07-18.
How severe is CVE-2019-13956?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2019-13956 known to be exploited?: 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.