CVE-2026-112779

Grav API Plugin before 1.0.42 Cache Exhaustion and Page Permission Bypass

Assigner: VulnCheck
Reserved: 19.10.2026 Published: 19.10.2026 Updated: 20.10.2026

Grav API plugin (grav-plugin-api) 1.0.40 before 1.0.42 caches a full translation dictionary for every well-formed language code sent to the unauthenticated GET /api/v1/translations/{lang} endpoint, and 1.0.16 before 1.0.42 fails to check target and destination page rules in the sync and batch copy endpoints. Unauthenticated attackers can send small requests that each store about 560 KB to exhaust disk or APCu, while accounts with api.pages.write can overwrite translations or create pages that page-level rules deny.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 9.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 9.8

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	getgrav
Product	grav-plugin-api
Versions	Default: unaffected affected from 1.0.16 to 1.0.42 (excl.) Version 1.0.42 is unaffected

Vendor

getgrav

Product

grav-plugin-api

Versions

Default: unaffected

affected from 1.0.16 to 1.0.42 (excl.)
Version 1.0.42 is unaffected

Credits

ma4ter reporter

References

Problem Types