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CVE-2021-25987

Hexo - Stored XSS

MEDIUM
4.6
CVSS Score
Published: November 30, 2021 at 01:50 PM UTC
Updated: June 17, 2026 at 03:42 AM UTC
1 product affected across 1 vendorHexo

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Severity
MEDIUM4.6
Exploit prediction
EPSS 0.3%
SSVC
PoC

Description

Hexo versions 0.0.1 to 5.4.0 are vulnerable against stored XSS. The post “body” and “tags” don’t sanitize malicious javascript during web page generation. Local unprivileged attacker can inject arbitrary code.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Hexo· Hexonpm
95%
v ≥ next of 0.0.1v ≤ 5.4.00.0.1 ≤ v ≤ 5.4.0next of 0.0.1

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/hexojs/hexo/commit/5170df2d3fa9c69e855c4b7c2b084ebfd92d5200
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25987

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.6MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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