CVE-2021-29472

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

4.66% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 90.9% of scored records. A rank, not a probability.

NVD base score

8.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-04-27 20:30Z5 YR AGO

Last updated

2024-08-03 22:11Z2 YR AGO

Reserved

2021-03-30

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

• CWE-88Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')Base
• CWE-94Improper Control of Generation of Code ('Code Injection')Base

Data version

5.1

Document digest

c5af5816204908c6b38dda7c466658478c445f20b5892f14bf69bd130236ace3

• github.comhttps://github.com/composer/composer/security/advisories/GHSA-h5h8-pc6h-jvvxx_refsource_CONFIRM
• getcomposer.orghttps://getcomposer.org/x_refsource_MISC
• www.debian.orgDSA-4907https://www.debian.org/security/2021/dsa-4907vendor-advisoryx_refsource_DEBIAN
• lists.debian.org[debian-lts-announce] 20210511 [SECURITY] [DLA 2654-1] composer security updatehttps://lists.debian.org/debian-lts-announce/2021/05/msg00009.htmlmailing-listx_refsource_MLIST
• lists.fedoraproject.orgFEDORA-2021-8a098ecbcfhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FAQUAMGO4Q4BLNZ2OH4CXQD7UK4IO2GE/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-ab7d0d3486https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KN3DMFH42BJW45VT6FYF2RXKC26D6VC2/vendor-advisoryx_refsource_FEDORA
• blog.sonarsource.comhttps://blog.sonarsource.com/php-supply-chain-attack-on-composer/x_refsource_MISC