Medium
python-jwcrypto — security advisory
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.
- Products
- python-jwcrypto
- Affected versions
- 0.2.1-1, 0.3.2-1, 0.4.2-1, 0.6.0-1, 0.6.0-2, 0.8.0-1, 1.0.0-2, 1.1.0-1, 1.5.4-1, 1.5.6-1, 1.5.6-1.1, 1.5.6-1.2
- Fixed versions
- Not specified
- CVEs
- CVE-2024-28102
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:12 UTC · Revision 1
Source evidence
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.
osv:UBUNTU-CVE-2024-28102
python-jwcrypto
Fixed versions: Not specified
python-jwcrypto
Fixed versions: Not specified
python-jwcrypto
Fixed versions: Not specified
python-jwcrypto
Fixed versions: Not specified
python-jwcrypto
Fixed versions: Not specified
python-jwcrypto
Fixed versions: Not specified
python-jwcrypto
Fixed versions: Not specified
python-jwcrypto
Fixed versions: Not specified
Complete source record
{
"id": "ff1a64c4100578588bf12adeb7560bcf6c23987613692851fa7ff07ba78f7f41",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2024-28102",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2024-28102",
"summary": "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.",
"evidence": "osv:UBUNTU-CVE-2024-28102",
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"database_specific": {
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],
"modified": "2026-10-17T12:56:43.909108457Z",
"provider": "osv",
"upstream": [
"CVE-2024-28102"
],
"references": [
"https://ubuntu.com/security/CVE-2024-28102",
"https://github.com/latchset/jwcrypto/security/advisories/GHSA-j857-7rvv-vj97",
"https://github.com/latchset/jwcrypto/commit/90477a3b6e73da69740e00b8161f53fea19b831f",
"https://www.cve.org/CVERecord?id=CVE-2024-28102"
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"security_relevant": true,
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"source_id": "core-osv",
"document_id": 356079,
"published_at": "2024-03-21T02:52:00+00:00"
}