Read the docs
TI-2026-74847 Aliases CVE-2026-77468

Lychee exposes unauthenticated, unthrottled /docs/api endpoint

Priority LOW 37CWE-770Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-770.

Summary

Lychee, a free open-source photo-management tool, exposes its Scramble-generated OpenAPI documentation at GET /docs/api to unauthenticated callers after installation. The route has no rate limiting, and the schema appears to be regenerated on each request without an application-level cache. A remote attacker can repeatedly request it to consume server CPU and obtain a detailed map of the API surface and parameter schema. Versions before 7.7.0 are affected (CWE-770).

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Lychee is a free, open-source photo-management tool. Prior to 7.7.0, GET /docs/api exposes the Scramble-generated OpenAPI documentation configured by config/scramble.php to unauthenticated callers after installation, with observed response size and latency suggesting that the schema is regenerated without an application-level cache. A remote attacker can repeatedly request the unthrottled route to consume server CPU and obtain a detailed map of the API surface and parameter schema. This issue is fixed in version 7.7.0.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00371 31st percentileScored 2026-11-07
Fix Fixed Lychee (LycheeOrg): 7.7.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
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
LycheeOrgLycheebefore 7.7.07.7.0Patch availableCNA
  • Lychee VendorLycheeOrg Affected before 7.7.0 Fixed in 7.7.0 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:lycheeorg:lychee:*:*:*:*:*:*:*:*——LycheeOrg
  • cpe:2.3:a:lycheeorg:lychee:*:*:*:*:*:*:*:* Versions — — ·LycheeOrg

Remediation

Upgrade Lychee to version 7.7.0, which fixes the issue.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA Lychee (LycheeOrg) Fixed in 7.7.0

Timeline

  1. 2026-10-16 Threatist record created from CVE-2026-77468
  2. 2026-10-16 Priority changed: MEDIUM → LOW
  3. 2026-10-28 CISA SSVC decision points changed

References

Other 4

  • TI-2026-74843 Album password bypass in Lychee ZIP downloads CVSS 4.0HIGH 8.2
  • TI-2026-74842 Missing rate limiting in Lychee album unlock allows password guessing CVSS 3.1HIGH 7.5
  • TI-2024-16953 Cross-site Request Forgery (CSRF) vulnerability in Lychee version 3.1.6, allows remote… CVSS 3.1HIGH 8.3
  • TI-2026-74848 Lychee webshop checkout lets buyers override payment amount CVSS 4.0HIGH 8.3
  • TI-2026-74845 Payment bypass in Lychee webshop through unrestricted Dummy gateway CVSS 4.0HIGH 8.3
  • TI-2026-74846 Uncontrolled resource consumption in Lychee PDF processing CVSS 4.0HIGH 7.1
See all 20 →

Sources

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