CVE-2021-36913: qube one redirection for contact form 7 (wordpress plugin) Improper Access Control
CVSS: 7.5v3.1HighModified
Published 11-10-2022Last modified 28-04-2026
Vulnerability summary
CVE-2021-36913 is a high (CVSS 7.5) Improper Access Control vulnerability in qube one redirection for contact form 7 (wordpress plugin). EPSS estimates a 0.70% chance of exploitation in the next 30 days, higher than 52.4% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (CVE.org)EPSS score
0.70%
0%100%
Low · +0.10 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 11-10-2022PublishedVulnerability first disclosed.
- 28-04-2026Last modifiedVulnerability information updated.
Description
Unauthenticated Options Change and Content Injection vulnerability in Qube One Redirection for Contact Form 7 plugin <= 2.4.0 at WordPress allows attackers to change options and inject scripts into the footer HTML. Requires an additional extension (plugin) AccessiBe.
CVSS metrics
3 scores · 3 sources · 1 versionHigh 7.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:NSources3 sources · 5.3–7.5
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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
0.70%
Chance of exploitation in the next 30 days
Percentile
52%
Versus all other CVEs
30-day change
+0.10 pp
From 0.61% on 20-09-2026
20-09-202620-10-2026
EPSS score0.70%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-284Improper Access ControlThe product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
- CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
- CWE-862Missing AuthorizationThe product does not perform an authorization check when an actor attempts to access a resource or perform an action.
Affected systems
Qube one1 product
- redirection for contact form 7 (wordpress plugin)≥ <= 2.4.0, ≤ 2.4.0
Redirection-for-contact-form71 product
Wordpress1 product
- wpcf7-redirect≤ 2.4.0 (fixed in 2.7.0)
3 vendors · 3 products
References
3 links- patchstack.com/database/…Third Party Advisory