CVE-2026-46377 json
Dasel: Index-out-of-range panic in dasel selector lexer on trailing backslash in quoted string
published 2026-05-19 5 mo ago modified 2026-10-24 15 d ago also GHSA-m5j3-4634-c2vq , GO-2026-5491 , EUVD-2026-44995
- cvss
- 6.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 8%
- public exploits
- 0
- none known
Summary
Dasel is a command-line tool and library for querying, modifying, and transforming data structures. From 3.0.0 until 3.10.1, the escape sequence handler in (*Tokenizer).parseCurRune in selector/lexer/tokenize.go increments past a trailing backslash in a quoted string such as "\ or '\ and then reads p.src[pos] without a bounds check, allowing attacker-controlled selector strings to trigger a Go index-out-of-range panic. This issue is fixed in version 3.10.1.
Patch / fix
- dasel Debian 14 3.11.0-1
debian advisories DEBIAN-CVE-2026-46377
- govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
opensuse advisories openSUSE-SU-2026:21483-1
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 3 mo ago
Exploit prediction
0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/TomWright/dasel/security/advisories/GHSA-m5j3-4634-c2vq referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.2 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/tomwright/dasel/v3 | >=3.0.0, <=3.10.0 >=3.0.0 |
no fix listed |
| go | github.com/tomwright/dasel | all versions |
no fix listed |
| go | github.com/tomwright/dasel/v2 | all versions |
no fix listed |
Affected products
- TomWright dasel
Classification
- Weakness
-
- CWE-129 Improper Validation of Array Index
References
Sources
- CVE List CVE-2026-46377
- GitHub Advisory GHSA-m5j3-4634-c2vq
- NVD CVE-2026-46377
- OSV GO-2026-5491
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