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TI-2021-07970 Aliases CVE-2021-25964GHSA-8gr4-jgmh-5g8w

Stored Cross-Site Scripting (XSS) in Calibre-web via Description Field in Metadata

Priority MEDIUM 58CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

In “Calibre-web” application, v0.6.0 to v0.6.12, are vulnerable to Stored XSS in “Metadata”. An attacker that has access to edit the metadata information, can inject JavaScript payload in the description field. When a victim tries to open the file, XSS will be triggered.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00549 46th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OzzieIsaacscalibreweb0.6.0 and later; up to 0.6.12—No fix listedCNA
  • calibreweb VendorOzzieIsaacs Affected 0.6.0 and later; up to 0.6.12 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:janeczku:calibre-web:*:*:*:*:*:*:*:*0.6.0 to before 0.6.12Vulnerablejaneczku
  • cpe:2.3:a:janeczku:calibre-web:*:*:*:*:*:*:*:* Versions 0.6.0 to before 0.6.12 Vulnerable ·janeczku

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-25964
  2. 2026-10-03 Alias added: GHSA-8gr4-jgmh-5g8w

References

Patch 1

Advisory 1

  • TI-2023-01981 Weak Password Requirements in janeczku/calibre-web CVSS 3.1CRITICAL 9.8
  • TI-2022-02333 Improper Restriction of Excessive Authentication Attempts in janeczku/calibre-web CVSS 3.1CRITICAL 9.8
  • TI-2021-07971 Calibre-web - Admin Account Takeover via Cross-Site Request Forgery (CSRF) CVSS 3.1HIGH 8.8
  • TI-2025-06745 Calibre Web 0.6.24 & Autocaliweb 0.7.0 - Blind C CVSS 4.0MEDIUM 5.9
  • TI-2021-02885 Cross-site Scripting (XSS) in janeczku/calibre-web CVSS 3.1MEDIUM 6.1
  • TI-2024-26178 In janeczku Calibre-Web 0.6.0 to 0.6.21, the edit_book_comments function is vulnerable to… CVSS 3.1MEDIUM 5.4
See all 23 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences