CVE-2024-28102JWCrypto vulnerable to JWT bomb Attack in `deserialize` function
- 6.8MediumCVSS base score
- 0.98%Exploitation in 30 daysEPSS · top 37% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- YesPublic exploitsa reference or SSVC says so
Description
JWCrypto implements JWK, JWS, and JWE specifications using python-cryptography. Prior to version 1.5.6, an attacker can cause a denial of service attack by passing in a malicious JWE Token with a high compression ratio. When the server processes this token, it will consume a lot of memory and processing time. Version 1.5.6 fixes this vulnerability by limiting the maximum token length.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: a proof of concept is public.
Timeline
ID reserved
By GitHub_M
- 2 days later
· 2 days later
Published
- 6 months later
· 6 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Medium6.8 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H |
| NVDNVD · Analyzed | 3.1 | Medium6.8 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.98% · top 37% of all CVEs (15 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.8.
Affected products
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- PyPIjwcryptoGHSA-j857-7rvv-vj97 (opens in a new tab)
References
References4
- https://github.com/latchset/jwcrypto/security/advisories/GHSA-j857-7rvv-vj97 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/latchset/jwcrypto/commit/90477a3b6e73da69740e00b8161f53fea19b831f (opens in a new tab)x_refsource_MISCx_transferred
- https://www.vicarius.io/vsociety/posts/denial-of-service-vulnerability-discovered-in-jwcrypto-cve-2024-28102-28103 (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2024/09/msg00026.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2024-0946 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-j857-7rvv-vj97 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2024-28102)Record last updated .