CVE-2020-26511
CVE-2020-26511 is a high-severity vulnerability in Wpo365 Wordpress + Azure Ad / Microsoft Office 365 with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v2: 5.0
- EPSS exploit prediction: 2% (80th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-287
- Affected product: Wpo365 Wordpress + Azure Ad / Microsoft Office 365
- Published:
- Last modified:
Description
The wpo365-login plugin before v11.7 for WordPress allows use of a symmetric algorithm to decrypt a JWT token. This leads to authentication bypass.
Frequently asked questions
- What is CVE-2020-26511?
- The wpo365-login plugin before v11.7 for WordPress allows use of a symmetric algorithm to decrypt a JWT token. This leads to authentication bypass.
- How severe is CVE-2020-26511?
- CVE-2020-26511 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
- Is CVE-2020-26511 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-26511?
- CVE-2020-26511 affects Wpo365 Wordpress + Azure Ad / Microsoft Office 365. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-26511?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2020-26511 published?
- CVE-2020-26511 was published on 2020-10-02 and last updated on 2026-06-17.
References
- https://plugins.trac.wordpress.org/changeset/2388992/
- https://wordpress.org/plugins/wpo365-login/#developers
- https://wpvulndb.com/vulnerabilities/10418
- https://www.wpo365.com/change-log/
Affected products (1)
- cpe:2.3:a:wpo365:wordpress_\+_azure_ad_\/_microsoft_office_365:*:*:*:*:*:wordpress:*:*
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