CVE-2026-84777: really simple plugins really simple ssl
CVSS: 7.4v3.1HighDeferred
Published 03-09-2026Last modified 03-09-2026
Vulnerability summary
CVE-2026-84777 is a high (CVSS 7.4) vulnerability in really simple plugins really simple ssl. EPSS estimates a 0.39% chance of exploitation in the next 30 days, higher than 31.5% of scored vulnerabilities. Fixed in 9.8.1.
CVSS score
7.4/10
010
High · v3.1 (CVE.org)EPSS score
0.39%
0%100%
Low · +0.15 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 03-09-2026PublishedVulnerability first disclosed.
- 03-09-2026Last modifiedVulnerability information updated.
Description
Unauthenticated Broken Authentication in Really Simple SSL <= 9.8.0 versions.
CVSS metrics
3 scores · 3 sources · 1 versionHigh 7.4Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:NSources3 sources · 5.3–7.4
- NVDNIST7.4HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- wordfenceSource5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NDiffers
EPSS trend
Probability
0.39%
Chance of exploitation in the next 30 days
Percentile
32%
Versus all other CVEs
30-day change
+0.15 pp
From 0.24% on 22-09-2026
22-09-202622-10-2026
EPSS score0.39%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- 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.
- CWE-287Improper AuthenticationWhen an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
Affected systems
Really simple plugins1 product
- really simple ssl≥ n/a, ≤ 9.8.0
Wordpress1 product
- really-simple-ssl≤ 9.8.0 (fixed in 9.8.1)
2 vendors · 2 products
References
2 links- patchstack.com/database/…VDB Entry