CVE-2019-13956: n/a vulnerability

CVE-2019-13956: Discuz!ML 3.2 through 3.4 allows remote attackers to execute arbitrary PHP code via a modified language coo...

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).

UnknownCVSS not scoredNot KEV-listedUpdatedAug 5, 2024, 00:05 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2019-13956 is a remote code execution issue in Discuz!ML 3.2 through 3.4. A public-facing site using affected versions could allow an attacker to run PHP code through a crafted language cookie. The source bundle does not provide CVSS, patch details, or evidence of active exploitation. Exposure is most likely for internet-facing Discuz!ML installations running versions 3.2, 3.3, or 3.4. Organizations without an inventory of legacy PHP forum/CMS software should assume possible exposure until verified. Treat this as a high-priority legacy web application risk if Discuz!ML is present. Remote PHP execution can lead to site takeover, data exposure, and lateral movement, but urgency depends on confirmed deployment and internet exposure. Mitigation focus: Inventory all Discuz!ML deployments and confirm exact versions.; Check Discuz!ML or maintainer guidance for fixed versions or official mitigation.; Upgrade or retire affected 3.2 through 3.4 installations where possible..

Prepared: Jun 6, 2026, 20:22 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jul 18, 2019, 17:23 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors

0Timeline events

0ADP providers

1Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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