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CVE-2023-49290

16
FAUCET Score

CVE-2023-49290 is a denial-of-service vulnerability affecting lestrrat-go/jwx, a Go module for JOSE technologies. An attacker can exploit this by setting an excessively high 'p2c' parameter in a JWE, causing significant computational resource consumption during key derivation. This vulnerability has a CVSS score of 5.3 (Medium) due to its network attack vector and low attack complexity, leading to a denial of service without impacting confidentiality or integrity. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE. Users are advised to upgrade to versions 1.2.27 or 2.0.18 to mitigate this risk.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.2.27CPE matchmatch criteria
cpe:2.3:a:lestrrat-go:jwx:*:*:*:*:*:*:*:*
>= 2.0.0, < 2.0.18CPE matchmatch criteria
cpe:2.3:a:lestrrat-go:jwx:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.72%
Probability of exploitation in next 30 days
EPSS Percentile
50.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0072 is in the 31st percentile among its peer group of 23,703 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

github_advisorypatch availablevia nvd_reference
View patch
gopatch availablevia ghsa
Product: github.com/lestrrat-go/jwxFixed in: 1.2.27
gopatch availablevia ghsa
Product: github.com/lestrrat-go/jwx/v2Fixed in: 2.0.18
redhatend of lifevia redhat_api
Product: OpenShift Service Mesh 2Fixed in: openshift-service-mesh/istio-cni-rhel8
redhatend of lifevia redhat_api
Product: OpenShift Service Mesh 2Fixed in: openshift-service-mesh/pilot-rhel8
redhatend of lifevia redhat_api
Product: OpenShift Service Mesh 2Fixed in: openshift-service-mesh/proxyv2-rhel8

Vendor Advisories (2)

goGHSA-7f9x-gw85-8grfmedium

lestrrat-go/jwx's malicious parameters in JWE can cause a DOS

Dec 5, 2023
redhatCVE-2023-49290Moderate

jwx: Malicious parameters in JWE can cause denial of service

Dec 5, 2023

References

github.com / lestrrat-go/jwx/commit/64f2a229b8e18605f47361d292b526bdc4aee01c
Patch
github.com / lestrrat-go/jwx/security/advisories/GHSA-7f9x-gw85-8grf
ExploitVendor Advisory