Trending
CVE-2026-4602

CVE detail

CVE-2026-4602

Versions of the package jsrsasign before 11.1.1 are vulnerable to Incorrect Conversion between Numeric Types due to handling negative exponents in ext/jsbn2.js. An attacker can force the computation of incorrect modular inverses and break signature verification by calling modPow with a negative exponent.

CVSS 7.7 · 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.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4602.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=2450206bugzilla.redhat.com
No excerpt available.
Exploitbugzilla.redhat.comMar 23, 2026, 6:16 AM
https://access.redhat.com/security/cve/CVE-2026-4602access.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-15371175security.snyk.io
No excerpt available.
Exploitsecurity.snyk.ioMar 23, 2026, 6:16 AM
https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-15812274security.snyk.io
No excerpt available.
Exploitsecurity.snyk.ioMar 23, 2026, 6:16 AM
https://github.com/kjur/jsrsasign/pull/650github.com
No excerpt available.
Exploitgithub.comMar 23, 2026, 6:16 AM
https://github.com/kjur/jsrsasign/commit/5ea1c32bb2aa894b4bd29849839afe4f98728195github.com
No excerpt available.
Exploitgithub.comMar 23, 2026, 6:16 AM
https://gist.github.com/Kr0emer/7ecd2be7d17419e4677315ef3758faf5gist.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

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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-2026-4602.

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-2026-4602Search 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:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/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): Low. No special conditions beyond the attacker-controlled steps are required.
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): None. There is no direct impact to this security property.
Vulnerable System Integrity (VI): None. There is no direct impact to this security property.
Vulnerable System Availability (VA): High. There is a total or serious impact to this security property.
Subsequent System Confidentiality (SC): None. There is no direct impact to this security property.
Subsequent System Integrity (SI): None. There is no direct 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