CVE-2025-63675 json
cryptidy allows code execution via untrusted data due to pickle.loads
published last yr. modified 21d ago also GHSA-97w9-v595-3h5q , PYSEC-2026-1282 , EUVD-2025-37311
- cvss
- 6.9
- 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 16%
- public exploits
- 0
- none known
Summary
cryptidy through 1.2.4 allows code execution via untrusted data because pickle.loads is used. This occurs in aes_decrypt_message in symmetric_encryption.py.
Is CVE-2025-63675 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- last yr.
Exploit prediction
0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- github.com https://github.com/javiermorales36/cryptidy-analysis referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.9 | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L |
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| OSV | 3.1 | 6.9 | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L |
| GitHub | 3.1 | 6.9 | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | cryptidy | <=1.2.4 |
no fix listed |
Affected products
- cryptidy cryptidy
Classification
- Weakness
-
- CWE-502 Deserialization of Untrusted Data
References
-
github.com
/javiermorales36/cryptidy-analysis
exploit, web, third-party-advisory
-
github.com
/netinvent/cryptidy/blob/cebc9ffd54cc20679d15a1a43ca9a5da645b0c58/cryptidy/symmetric_encryption.py#L220-L238
web, product
-
nvd.nist.gov
/vuln/detail/CVE-2025-63675
advisory
-
github.com
/netinvent/cryptidy
package
-
pypi.org
/project/cryptidy
package
-
github.com
/advisories/GHSA-97w9-v595-3h5q
advisory
Sources
- CVE List CVE-2025-63675
- GitHub Advisory GHSA-97w9-v595-3h5q
- NVD CVE-2025-63675
- OSV PYSEC-2026-1282
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.