Trending
CVE-2026-4601

CVE detail

CVE-2026-4601

Versions of the package jsrsasign before 11.1.1 are vulnerable to Missing Cryptographic Step via the KJUR.crypto.DSA.signWithMessageHash process in the DSA signing implementation. An attacker can recover the private key by forcing r or s to be zero, so the library emits an invalid signature without retrying, and then solves for x from the resulting signature.

CVSS 8.8 · HighBuzz score 43.7

Buzz score

Why this CVE is surfacing

Buzz score total 43.7

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 27.7 · diversity 16.0 · KEV 0.0 · OTX 0.0 · PoC 0.0

Mention score

27.7

15 evidence mentions in the snapshot

Diversity score

16.0

6 sources across 2 categories

KEV score

0.0

No KEV entry observed

OTX score

0.0

0 OTX pulses

PoC score

0.0

0 repos · best confidence N/A

Best PoC traction

Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions: 0; within the 30d window
Peak daily: 0; highest bucket

Evidence

Source links by recency

Newest mentions first

15 source links · newest first

https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-15812269security.snyk.io
No excerpt available.
Exploitsecurity.snyk.ioMar 23, 2026, 6:16 AM
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4601.jsonsecurity.access.redhat.com
No excerpt available.
Vendor Advisorysecurity.access.redhat.comMar 23, 2026, 6:16 AM
https://bugzilla.redhat.com/show_bug.cgi?id=2450209bugzilla.redhat.com
No excerpt available.
Exploitbugzilla.redhat.comMar 23, 2026, 6:16 AM
https://access.redhat.com/security/cve/CVE-2026-4601access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 23, 2026, 6:16 AM
https://access.redhat.com/errata/RHSA-2026:6926access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 23, 2026, 6:16 AM
https://access.redhat.com/errata/RHSA-2026:6912access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 23, 2026, 6:16 AM
https://access.redhat.com/errata/RHSA-2026:6720access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 23, 2026, 6:16 AM
https://access.redhat.com/errata/RHSA-2026:6568access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 23, 2026, 6:16 AM
https://access.redhat.com/errata/RHSA-2026:19410access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 23, 2026, 6:16 AM
https://access.redhat.com/errata/RHSA-2026:19409access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 23, 2026, 6:16 AM
https://access.redhat.com/errata/RHSA-2026:19375access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 23, 2026, 6:16 AM
https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15370941security.snyk.io
No excerpt available.
Exploitsecurity.snyk.ioMar 23, 2026, 6:16 AM
https://github.com/kjur/jsrsasign/pull/645github.com
No excerpt available.
Exploitgithub.comMar 23, 2026, 6:16 AM
https://github.com/kjur/jsrsasign/commit/0710e392ec35de697ce11e4219c988ba2b5fe0ebgithub.com
No excerpt available.
Exploitgithub.comMar 23, 2026, 6:16 AM
https://gist.github.com/Kr0emer/93789fe6efe5519db9692d4ad1dad586gist.github.com
No excerpt available.
Exploitgist.github.comMar 23, 2026, 6:16 AM

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

0 repository references · best confidence N/A · max 0 stars

No public PoC repositories have been matched yet.

Related records

Similar CVEs

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CVE-2026-9266
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External lookup

Potential internet exposure

Potential exposure only — not proof of vulnerability.Shodan results indicate potentially internet-exposed products, not confirmed vulnerable systems. They do not confirm that any returned system is vulnerable to CVE-2026-4601.

Product-level CPE searches intentionally omit version fields and NVD version-range or configuration certainty. Verify the exact product version and configuration independently.

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Product CPE queries

Derived from this CVE's existing NVD CPE 2.3 records; the application, operating-system, or hardware part is retained.

cpe:2.3:a:kjur:jsrsasignSearch this product on Shodan

Exact CVE query

Eligible paid Shodan plan required

Shodan's exact vuln: filter is separate from the product searches above and requires an eligible paid Shodan plan.

vuln:CVE-2026-4601Search this CVE on Shodan

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Metadata

Canonical fields

NVD status

Modified

Published

Mar 23, 2026

Modified

Jul 20, 2026

Official record

Authoritative NVD record

CVSS vector

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:H/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CWE IDs

Vendor classifications

How this vector reads

CVSS 4.0 base metrics decoded below. This explanation does not recalculate or change the NVD score.

Attack Vector (AV): Network. The vulnerable system can be reached across network boundaries.
Attack Complexity (AC): High. Successful exploitation depends on conditions outside the attacker's control.
Attack Requirements (AT): None. No prerequisite deployment or execution condition is required.
Privileges Required (PR): None. The attacker needs no privileges on the vulnerable system.
User Interaction (UI): None. Exploitation does not require a targeted user to act.
Vulnerable System Confidentiality (VC): High. There is a total or serious impact to this security property.
Vulnerable System Integrity (VI): High. There is a total or serious impact to this security property.
Vulnerable System Availability (VA): None. There is no direct impact to this security property.
Subsequent System Confidentiality (SC): None. There is no direct impact to this security property.
Subsequent System Integrity (SI): High. There is a total or serious impact to this security property.
Subsequent System Availability (SA): None. There is no direct impact to this security property.

Optional CVSS v4 metrics remain in the raw vector; only base metrics are expanded here.

Signals

Exploitation indicators

0 stored signals · no KEV · 0 OTX pulses