CVE-2026-75830Public exploitNetwork attack vector

Authenticated arbitrary file write via suffix traversal

Published Aug 18, 2026 · Updated Aug 18, 2026

Path traversal in PagesController::batchCopy() in getgrav grav-plugin-api before 1.0.15 allows remote authenticated users to write files via a crafted suffix value. The method concatenates the user-controlled suffix into destSlug and destPath and then passes the resulting path to Folder::copy() without restricting the value to a single path segment, so ../ sequences can escape user/pages/. Reachability requires authentication plus api.pages.write permission, and the write primitive can create attacker-chosen directories and page or media files anywhere the web server process can write.

CVSS severity7.1
High
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in PagesController::batchCopy() in getgrav grav-plugin-api before 1.0.15 allows remote authenticated users to write files via a crafted suffix value. The method concatenates the user-controlled suffix into destSlug and destPath and then passes the resulting path to Folder::copy() without restricting the value to a single path segment, so ../ sequences can escape user/pages/. Reachability requires authentication plus api.pages.write permission, and the write primitive can create attacker-chosen directories and page or media files anywhere the web server process can write.

The record

CVE
CVE-2026-75830
Published
Aug 18, 2026
Updated
Aug 18, 2026
Vendor
Grav
Product
Grav
Classifications
CWE-73, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.0.15

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Grav · Gravversion=0 <1.0.15

Published CVSS scores

7.1VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
7.1VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-73External Control of File Name or Path
T1565.001Stored Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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