CVE-2026-18052: unknown managewp worker Improper Authentication
Vulnerability summary
CVE-2026-18052 is a critical (CVSS 9.8) Improper Authentication vulnerability in unknown managewp worker. EPSS estimates a 0.37% chance of exploitation in the next 30 days, higher than 29.8% of scored vulnerabilities. 1 public exploit is recorded. Fixed in 4.9.37.
Timeline
- 22-08-2026PublishedVulnerability first disclosed.
- 23-08-2026Last modifiedVulnerability information updated.
Description
The ManageWP Worker WordPress plugin before 4.9.37 does not bind the account being logged in to the signature which authorises the login, nor prevent an already used login link from being replayed, allowing attackers who obtain such a link to gain a session as any user on the site, including an administrator.
CVSS metrics
3 scores · 3 sources · 1 version- CVE.orgCNA8.1HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HDiffers
- NVDNIST8.1HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HDiffers
EPSS trend
Probability
0.37%
Chance of exploitation in the next 30 days
Percentile
30%
Versus all other CVEs
30-day change
+0.10 pp
From 0.27% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (wpscan.com)
Maturity: unknown
Weaknesses
CWE · root cause- CWE-287Improper AuthenticationWhen an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
- CWE-288Authentication Bypass Using an Alternate Path or ChannelThe product requires authentication, but the product has an alternate path or channel that does not require authentication.
Affected systems
Unknown1 product
- managewp worker< 4.9.37
Wordpress1 product
- worker< 4.9.37
2 vendors · 2 products