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Medium 6.2Published Jul 16, 2026

CVE-2026-46378Dasel: Denial of service in dasel selector lexer due to infinite loop on unterminated regex literal

Updated under an hour ago ()

Does this affect you?

It affects TomWright dasel. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Dasel is a command-line tool and library for querying, modifying, and transforming data structures. From 3.0.0 until 3.10.1, the selector lexer matchRegexPattern closure in (*Tokenizer).parseCurRune in selector/lexer/tokenize.go loops while tokenizing an unterminated regex literal such as r/ because peekRuneEqual returns false after the end of input, allowing attacker-controlled selector strings to consume CPU indefinitely. This issue is fixed in version 3.10.1.

CVSS
6.2 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE)
CWE-835
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
GitHub_M
NVD analysis
Deferred
Record last updated
Jul 17, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
TomWright dasel
tomwright:dasel (from the name)
from 3.0.0, < 3.10.1
CNA record

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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