CVE-2016-10555 - Vulnerability Details - OpenCVE

Since "algorithm" isn't enforced in jwt.decode()in jwt-simple 0.3.0 and earlier, a malicious user could choose what algorithm is sent sent to the server. If the server is expecting RSA but is sent HMAC-SHA with RSA's public key, the server will think the public key is actually an HMAC private key. This could be used to forge any data an attacker wants.

No CVSS v4.0

No CVSS v3.1

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction None

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact None

Integrity Impact Partial

Availability Impact None

This CVE is not in the KEV list.

The EPSS score is 0.81652.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

HackerOne

jwt-simple node module

affected

Version	Status	Constraints
`<=0.3.0`	affected	—

Configuration 1 [-]

cpe:2.3:a:jwt-simple_project:jwt-simple:*:*:*:*:*:node.js:*:*

No data.

No data.

Project Subscriptions

Vendors	Products
Jwt-simple Project Subscribe	Jwt-simple Subscribe

Advisories

Source	ID	Title
Github GHSA	GHSA-vgrx-w6rg-8fqf	Forgeable Public/Private Tokens in jwt-simple

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries/
https://github.com/hokaccha/node-jwt-simple/pull/14
https://github.com/hokaccha/node-jwt-simple/pull/16
https://nodesecurity.io/advisories/87

History

Wed, 16 Jul 2025 13:45:00 +0000

Type	Values Removed	Values Added
Metrics	epss `{'score': 0.71282}`	epss `{'score': 0.71686}`

Projects

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MITRE

Status: PUBLISHED

Assigner: hackerone

Published: 2018-05-31T20:00:00Z

Updated: 2024-09-16T16:38:09.923Z

Reserved: 2017-10-29T00:00:00

Link: CVE-2016-10555

Vulnrichment

No data.

NVD

Status : Modified

Published: 2018-05-31T20:29:02.067

Modified: 2024-11-21T02:44:16.137

Link: CVE-2016-10555

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

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