CVE-2025-49597 json
handcraftedinthealps goodby-csv Potential Gadget Chain allowing Remote Code Execution
published last yr. modified 4mo ago also GHSA-x3c7-22c8-prg7 , EUVD-2025-18300
- cvss
- 3.9
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 17%
- public exploits
- 0
- none known
Summary
handcraftedinthealps goodby-csv is a highly memory efficient, flexible and extendable open-source CSV import/export library. Prior to 1.4.3, goodby-csv could be used as part of a chain of methods that is exploitable when an insecure deserialization vulnerability exists in an application. This so-called "gadget chain" presents no direct threat but is a vector that can be used to achieve remote code execution if the application deserializes untrusted data due to another vulnerability. The problem is patched with Version 1.4.3.
Patch / fix
- packagist handcraftedinthealps/goodby-csv 1.4.3
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- last yr.
Exploit prediction
0.26% chance of exploitation in the next 30 days, higher than 17% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 3.9 | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L |
| GitHub | 3.1 | 3.9 | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | handcraftedinthealps/goodby-csv | <1.4.3 |
1.4.3 |
Affected products
- handcraftedinthealps goodby-csv
Classification
- Weakness
-
- CWE-915 Improperly Controlled Modification of Dynamically-Determined Object Attributes
References
Sources
- CVE List CVE-2025-49597
- GitHub Advisory GHSA-x3c7-22c8-prg7
- NVD CVE-2025-49597
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