# CVE-2026-124636: kevquirk PureBlog Page Editor content.php save_page path traversal

Status: published. Published: 2026-11-09. Updated: 2026-11-09.

A security flaw has been discovered in kevquirk PureBlog up to 3.7.2. The affected element is the function save_page of the file includes/lib/content.php of the component Page Editor. Performing a manipulation of the argument page slug results in path traversal. Remote exploitation of the attack is possible. Upgrading to version 3.7.3 is sufficient to fix this issue. The patch is named 71f5b0de2ecb2bb2934048ed40e1155c107484e3. The affected component should be upgraded. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulDB) — https://github.com/kevquirk/pureblog/commit/71f5b0de2ecb2bb2934048ed40e1155c107484e3
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulDB) — https://github.com/kevquirk/pureblog/releases/tag/v3.7.3

## Affected products and versions

- kevquirk / PureBlog: 3.7.0 (affected); 3.7.1 (affected); 3.7.2 (affected); 3.7.3 (unaffected). Source: CNA: VulDB

## Severity and prioritization

- CVSS 4.0: 5.1 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X; source: CNA: VulDB

- CVSS 3.1: 3.8 (low); CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L/E:X/RL:O/RC:C; source: CNA: VulDB

- CVSS 3.0: 3.8 (low); CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L/E:X/RL:O/RC:C; source: CNA: VulDB

- CVSS 2.0: 4.7 (medium); AV:N/AC:L/Au:M/C:N/I:P/A:P/E:ND/RL:OF/RC:C; source: CNA: VulDB

- CVSS 4.0: 5.1 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X; source: NVD: cna@vuldb.com

- CVSS 3.1: 3.8 (low); CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L; source: NVD: cna@vuldb.com

- CVSS 2.0: 4.7 (medium); AV:N/AC:L/Au:M/C:N/I:P/A:P; source: NVD: cna@vuldb.com

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-22

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://vuldb.com/vuln/433066 (CNA: VulDB; vdb-entry, technical-description)

- https://vuldb.com/vuln/433066/cti (CNA: VulDB; signature, permissions-required)

- https://vuldb.com/cve/CVE-2026-124636 (CNA: VulDB; third-party-advisory)

- https://vuldb.com/submit/1040559 (CNA: VulDB; third-party-advisory)

- https://github.com/kevquirk/pureblog/issues/87 (CNA: VulDB; issue-tracking)

- https://github.com/kevquirk/pureblog/commit/71f5b0de2ecb2bb2934048ed40e1155c107484e3 (CNA: VulDB; patch)

- https://github.com/kevquirk/pureblog/releases/tag/v3.7.3 (CNA: VulDB; patch)

- https://github.com/kevquirk/pureblog/ (CNA: VulDB; product)

- https://github.com/kevquirk/pureblog/ (cna@vuldb.com)

- https://github.com/kevquirk/pureblog/commit/71f5b0de2ecb2bb2934048ed40e1155c107484e3 (cna@vuldb.com)

- https://github.com/kevquirk/pureblog/issues/87 (cna@vuldb.com)

- https://github.com/kevquirk/pureblog/releases/tag/v3.7.3 (cna@vuldb.com)

- https://vuldb.com/cve/CVE-2026-124636 (cna@vuldb.com)

- https://vuldb.com/submit/1040559 (cna@vuldb.com)

- https://vuldb.com/vuln/433066 (cna@vuldb.com)

- https://vuldb.com/vuln/433066/cti (cna@vuldb.com)

## Provenance

- CNA: VulDB: https://www.cve.org/CVERecord?id=CVE-2026-124636; retrieved 2026-11-09; source updated 2026-11-09

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-124636; retrieved 2026-11-10; source updated 2026-11-09

Revision: cc35d3711fe552bd275d96e5d695f879ee5b170feff35ee20d3383033e2471a0

Canonical: https://y2.dev/cve/CVE-2026-124636

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.