CVE-2023-39521

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited 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

0.56% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 43.9% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

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

2023-08-24 22:40Z3 YR AGO

Last updated

2024-10-02 18:38Z1 YR AGO

Reserved

2023-08-03

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Medium (CVSS 4.8)

CNA CVSS vector

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

Weaknesses

• CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base

Data version

5.1

Document digest

7c7fe03dda2c37f1de44bbc79f09909c2a6538e3207e3b613ec8fb3d2bae0711

• github.comhttps://github.com/Enalean/tuleap/security/advisories/GHSA-h9xc-w7qq-vpfcx_refsource_CONFIRM
• github.comhttps://github.com/Enalean/tuleap/commit/93d10654b1d95c5bf500204666310418b01b8a8dx_refsource_MISC
• tuleap.nethttps://tuleap.net/plugins/git/tuleap/tuleap/stable?a=commit&h=93d10654b1d95c5bf500204666310418b01b8a8dx_refsource_MISC
• tuleap.nethttps://tuleap.net/plugins/tracker/?aid=33656x_refsource_MISC