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CVE-2021-30149

45
FAUCET Score

CVE-2021-30149 is a critical remote code execution vulnerability affecting Composr version 10.0.36, allowing unauthenticated attackers to upload and execute arbitrary PHP files. With a CVSS score of 9.8, this vulnerability is easily exploitable over the network with no user interaction, leading to complete compromise of confidentiality, integrity, and availability. While not currently listed on CISA's KEV catalog, public exploit code is available on ExploitDB, indicating a high potential for exploitation. Despite its severity and public exploit, there is minimal community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
10.0.36CPE matchmatch criteria
cpe:2.3:a:ocproducts:composr:10.0.36:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
10.06%
Probability of exploitation in next 30 days
EPSS Percentile
95.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-49753 · Apr 8, 2021
This CVE's current EPSS score of 0.1006 is in the 91st percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/162128/Composr-10.0.36-Shell-Upload.html
ExploitThird Party Advisory
gitlab.com / composr-foundation/composr/commit/a71c44e03
PatchThird Party Advisory