CWE-777 Regular Expression without Anchors

variant

The product uses a regular expression to perform neutralization, but the regular expression is not anchored and may allow malicious or malformed data to slip through.

parent weaknesses

Broader classes this is a kind of.

CWE-625Permissive Regular Expression

vulnerabilities (6)

Known CVEs related to this entry.

ID	severity	EPSS	exploitable	published
CVE-2026-40110US	high7.3	0.31% (24th)	—	2026-05-05
Jupyter Server is the backend for Jupyter web applications. In versions 2.17.0 and earlier, the Origin header validation uses Python's re.match() to check incoming origins against…
CVE-2026-22068US	medium5.3	0.61% (49th)	—	2026-07-29
Regular Expression without Anchors vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server: from 10.0.X through 10.1.3, from 9.0.X through 9.2.14. Users…
CVE-2026-97736US	—	0.21% (11th)	—	2026-09-25
tinyauth before 5.1.3 allows rule bypass by appending an allowed route string. This is caused by an unanchored regular expression.
CVE-2026-56021US	—	0.48% (41st)	—	2026-06-18
Webmin allows unauthenticated attackers to read the contents of any file ending in .conf within module directories, due to a bypassable regex pattern.
CVE-2026-39087US	—	0.27% (19th)	—	2026-04-23
ntfy before 2.22.0 allows SSRF because of an unanchored regular expression for web push endpoint URLs.
CVE-2024-1899US	—	0.81% (57th)	—	2024-02-26
An issue in the anchors subparser of Showdownjs versions <= 2.1.0 could allow a remote attacker to cause denial of service conditions.

source

Where this definition is published.

MITREUS

scry

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