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CVE-2021-29445

21
FAUCET Score

CVE-2021-29445 is a padding oracle vulnerability affecting jose-node-esm-runtime versions prior to 3.11.4, specifically impacting the AES_CBC_HMAC_SHA2 decryption algorithm. An attacker could exploit subtle timing differences during decryption to potentially decrypt data without the key. Rated Medium severity (CVSS 5.9), it requires high attack complexity but could lead to high confidentiality impact. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.11.4CPE matchmatch criteria
cpe:2.3:a:jose-node-cjs-runtime_project:jose-node-cjs-runtime:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

5.9MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.24%
Probability of exploitation in next 30 days
EPSS Percentile
66.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0124 is in the 33rd percentile among its peer group of 19,956 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 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 (1)

npmpatch availablevia ghsa
Product: jose-node-esm-runtimeFixed in: 3.11.4

Vendor Advisories (1)

npmGHSA-4v4g-726h-xvfvmedium

Padding Oracle Attack due to Observable Timing Discrepancy in jose-node-esm-runtime

Apr 19, 2021

References

github.com / panva/jose/security/advisories/GHSA-4v4g-726h-xvfv
Third Party Advisory
npmjs.com / package/jose-node-esm-runtime
ProductThird Party Advisory