CVE-2026-4600 (GCVE-0-2026-4600)
Vulnerability from cvelistv5 – Published: 2026-03-23 05:00 – Updated: 2026-09-10 12:05
VLAI
EPSS
VEX
Summary
Versions of the package jsrsasign before 11.1.1 are vulnerable to Improper Verification of Cryptographic Signature via the DSA domain-parameter validation in KJUR.crypto.DSA.setPublic (and the related DSA/X509 verification flow in src/dsa-2.0.js). An attacker can forge DSA signatures or X.509 certificates that X509.verifySignature() accepts by supplying malicious domain parameters such as g=1, y=1, and a fixed r=1, which make the verification equation true for any hash.
Severity
8.2 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-23 14:32 UTC
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
15 references
Impacted products
9 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| n/a | jsrsasign |
Affected:
0 , < 11.1.1
(semver)
|
||
| n/a | org.webjars.npm:jsrsasign |
Affected:
0 , < *
(semver)
|
||
| Red Hat | Migration Toolkit for Virtualization 2.1 |
Unaffected:
1779139872 , < *
(rpm)
cpe:/a:redhat:migration_toolkit_virtualization:2.10::el9 |
||
| Red Hat | Migration Toolkit for Virtualization 2.9 |
Unaffected:
1778927462 , < *
(rpm)
cpe:/a:redhat:migration_toolkit_virtualization:2.9::el9 |
||
| Red Hat | Red Hat Quay 3.10 |
Unaffected:
1775169155 , < *
(rpm)
cpe:/a:redhat:quay:3.10::el8 |
||
| Red Hat | Red Hat Quay 3.12 |
Unaffected:
1775253092 , < *
(rpm)
cpe:/a:redhat:quay:3.12::el8 |
||
| Red Hat | Red Hat Quay 3.15 |
Unaffected:
1775169219 , < *
(rpm)
cpe:/a:redhat:quay:3.15::el8 |
||
| Red Hat | Red Hat Quay 3.16 |
Unaffected:
1779204086 , < *
(rpm)
cpe:/a:redhat:quay:3.16::el9 |
||
| Red Hat | Red Hat Quay 3.9 |
Unaffected:
1775169218 , < *
(rpm)
cpe:/a:redhat:quay:3.9::el8 |
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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