TI-2021-06669 Aliases CVE-2021-24377 GHSA-4639-xx39-q537

Autoptimize < 2.7.8 - Race Condition leading to RCE

LOW 38CWE-362Published 2021-06-21 · Updated 2024-08-03

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: High
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

The Autoptimize WordPress plugin before 2.7.8 attempts to remove potential malicious files from the extracted archive uploaded via the 'Import Settings' feature, however this is not sufficient to protect against RCE as a race condition can be achieved in between the moment the file is extracted on the disk but not yet removed. It is a bypass of CVE-2020-24948.

Why it matters now

EPSS 0.01183 67th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed Autoptimize (Unknown): 2.7.8

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Unknown	Autoptimize	2.7.8 to before 2.7.8	2.7.8	Patch available	CNA

Autoptimize VendorUnknown Affected 2.7.8 to before 2.7.8 Fixed in 2.7.8 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:autoptimize:autoptimize::::::wordpress::*	before 2.7.8	Vulnerable	Autoptimize

cpe:2.3:a:autoptimize:autoptimize:*:*:*:*:*:wordpress:*:* Versions before 2.7.8 Vulnerable ·Autoptimize

Remediation

Fix · CNA Autoptimize (Unknown) Fixed in 2.7.8

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2021-06-21
Autoptimize 2.7.8
3 records Highest priority Priority MEDIUM 1 MEDIUM, 2 LOW
Other records, highest priority first
- TI-2021-06668 Autoptimize < 2.7.8 - Arbitrary File Upload via "Import Settings"Priority MEDIUM 48
- TI-2021-06670 Autoptimize < 2.7.8 - Authenticated Stored XSS via File UploadPriority LOW 23
Show all 3 records →

Timeline

2026-10-02 Threatist record created from CVE-2021-24377
2026-10-03 Alias added: GHSA-4639-xx39-q537

References

Exploit 1

https://wpscan.com/vulnerability/85c0a564-2e56-413d-bc3a-1039343207e4

TI-2023-01988 Autoptimize < 3.1.7 - Admin+ Stored Cross-Site Scripting via Settings Import CVSS 3.1MEDIUM 4.8
TI-2021-06668 Autoptimize < 2.7.8 - Arbitrary File Upload via "Import Settings" CVSS 3.1CRITICAL 9.8
TI-2020-15253 The ao_ccss_import AJAX call in Autoptimize Wordpress Plugin 2.7.6 does not ensure that… CVSS 3.1HIGH 7.2
TI-2022-02436 Autoptimize < 3.1.1 - Admin+ Stored Cross Site Scripting CVSS 3.1MEDIUM 4.8
TI-2021-06670 Autoptimize < 2.7.8 - Authenticated Stored XSS via File Upload CVSS 3.1MEDIUM 4.8
TI-2021-06624 Autoptimize < 2.8.4 - Authenticated Stored Cross-Site Scripting (XSS) CVSS 3.1MEDIUM 4.8

Sources

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