SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-30149

Composr 10.0.36 allows upload and execution of PHP files.

EXPLOITCRITICAL 9.8EPSS 10.1%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 10.1%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.

Description

Composr 10.0.36 allows upload and execution of PHP files.

CVSS 3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
10.06% probability · 96th percentile
Public exploits
1 in Exploit-DB · first 8 April 2021
CISA KEV
Not listed
Weakness
CWE-434
Affected
ocproducts/composr
Source
cve@mitre.org
EPSS trend
0%8%15%3 November 2026: 10.06%3 November 20263 November 2026

EPSS 10.1% since 3 November 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.

Public exploits (1)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-IDTitleTypePublishedVerified
EDB-49753source ↗Composr 10.0.36 - Remote Code Executionphp · Orion Hridoywebapps8 April 2021no

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.