CVE-2023-26103

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.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• 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

1.23% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 66.8% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

2023-02-25 05:00Z3 YR AGO

Last updated

2025-03-11 15:31Z1 YR AGO

Reserved

2023-02-20

Assigning CNA

snyk

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

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

Weaknesses

• CWE-1333Inefficient Regular Expression ComplexityBase

Data version

5.1

Document digest

0f3f41d74c63f9bb8887701605ea07d677f0af998d113bff8f8a34b34699beee

• security.snyk.iohttps://security.snyk.io/vuln/SNYK-RUST-DENO-3315970
• github.comhttps://github.com/denoland/deno/blob/2b247be517d789a37e532849e2e40b724af0918f/ext/http/01_http.js%23L395-L409
• github.comhttps://github.com/denoland/deno/pull/17722
• github.comhttps://github.com/denoland/deno/commit/cf06a7c7e672880e1b38598fe445e2c50b4a9d06
• github.comhttps://github.com/denoland/deno/releases/tag/v1.31.0