CVE-2023-6681: Jwcrypto: denail of service via specifically crafted jwe
Vulnerability summary
CVE-2023-6681 is a medium (CVSS 5.3) Uncontrolled Resource Consumption vulnerability in fedoraproject fedora. EPSS estimates a 0.88% chance of exploitation in the next 30 days, higher than 59.2% of scored vulnerabilities.
Not severe (CVSS 5.3, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 1Timeline
- 12-02-2024PublishedVulnerability first disclosed.
- 26-02-2026Last modifiedVulnerability information updated.
Description
A vulnerability was found in JWCrypto. This flaw allows an attacker to cause a denial of service (DoS) attack and possible password brute-force and dictionary attacks to be more resource-intensive. This issue can result in a large amount of computational consumption, causing a denial of service attack.
CVSS metrics
7 scores · 7 sources · 1 version- OSV · PypiEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- OSV · Red hatEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- OSV · UbuntuEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- OSV · DebianEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- NVDNIST5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- OSV · AlpineEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
EPSS trend
Probability
0.88%
Chance of exploitation in the next 30 days
Percentile
59%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.88% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Redhat6 products
- enterprise_linux8.0 | 9.0
- enterprise_linux_for_arm_648.0
- enterprise_linux_for_ibm_z_systems8.0
- enterprise_linux_for_power_little_endian8.0
- python-jwcrypto< 0:1.5.6-2.el9
Alpine1 product
- py3-jwcrypto< 1.5.1-r0
Debian1 product
- python-jwcryptoAll versions (No fix recorded) | < 1.5.4-1
Fedoraproject1 product
- fedoraEOL38 | 39
Latchset1 product
- jwcrypto< 1.5.1
PyPI1 product
- jwcrypto< 1.5.1
Ubuntu1 product
- python-jwcryptoAll versions (No fix recorded)
7 vendors · 12 products
References
18 links- access.redhat.com/errata/RHSA-2024:3267Vendor AdvisoryX Refsource REDHATWEBAdvisoryThird Party Advisory
- access.redhat.com/security/cve/CVE-2023-6681VDB EntryX Refsource REDHATWEBREPORTThird Party Advisory
- bugzilla.redhat.com/show_bug.cgi?id=2260843Issue TrackingX Refsource REDHATWEBREPORTThird Party Advisory
- github.com/latchset/jwcryptoPACKAGE
