CVE-2023-43655

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

1.53% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 74.3% 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

Analyzed. 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

2023-09-29 19:33Z3 YR AGO

Last updated

2025-06-18 13:59Z1 YR AGO

Reserved

2023-09-20

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Medium (CVSS 6.4)

CNA CVSS vector

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

Weaknesses

• CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')Class

Data version

5.1

Document digest

f8c7d2434f53923f304e4d41dd42fac0d7f2b84ffe43ead45594b4acc93534e6

• github.comhttps://github.com/composer/composer/security/advisories/GHSA-jm6m-4632-36hfx_refsource_CONFIRM
• github.comhttps://github.com/composer/composer/commit/4fce14795aba98e40b6c4f5047305aba17a6120dx_refsource_MISC
• github.comhttps://github.com/composer/composer/commit/955a48e6319c8962e5cd421b07c00ab3c728968cx_refsource_MISC
• github.comhttps://github.com/composer/composer/commit/95e091c921037b7b6564942845e7b738f6b95c9cx_refsource_MISC
• lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KFOPGPW2KS37O3KJWBRGTUWHTXCQXBS2/
• lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7AWYAUZNH565NWPIKGEIYBWHYNM5JGAE/
• lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/66H2WKFUO255T3BZTL72TNYJYH2XM5FG/
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2024/03/msg00030.html