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TI-2026-44177 Aliases CVE-2026-61718

bunkerweb: Read-only Web UI users can delete job cache files due to missing authorization on /cache/ routes

Priority LOW 25CWE-285Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · Low · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-285.

Summary

bunkerweb is an Open-source and next-generation Web Application Firewall (WAF). From 1.6.2 until 1.6.12, the BunkerWeb web UI BiscuitMiddleware authorization bypass list included the /cache/ URL prefix, so routes in src/ui/app/routes/cache.py protected only by @login_required, including POST /cache/delete, allowed low-privilege read-only reader accounts to permanently delete job cache files containing blacklist, greylist, DNSBL, CrowdSec, GeoIP, ModSecurity CRS, Let's Encrypt, ACME, and custom configuration data. This issue is fixed in version 1.6.12.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0043 37th percentileScored 2026-11-07
Fix Fixed bunkerweb (bunkerity): 1.6.12

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
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
bunkeritybunkerweb1.6.2 to before 1.6.121.6.12Patch availableCNA
  • bunkerweb Vendorbunkerity Affected 1.6.2 to before 1.6.12 Fixed in 1.6.12 Patch available CNA

Remediation

  • Fix · CNA bunkerweb (bunkerity) Fixed in 1.6.12

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-61718

References

Other 3

  • TI-2026-52878 BunkerWeb: rDNS bypass via missing forward-confirmation (FCrDNS) in blacklist, greylist, and antibot CVSS 3.1MEDIUM 5.9
  • TI-2026-39541 Improper input validation in bunkerity bunkerweb CVSS 4.0MEDIUM 6.1
  • TI-2024-35727 Open Redirect Vulnerability in Loading Page in bunkerweb CVSS 4.0MEDIUM 5.1
  • TI-2025-07379 Bunker Web 1.6.2 - Uncontrolled external site redirect CVSS 4.0MEDIUM 4.8

Sources

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