MEDIUM
CVE-2020-26136
CWE-287Published: June 8, 2021· Updated: Jun 17, 2026
6.5
CVSS v3.1
Official Description
In SilverStripe through 4.6.0-rc1, GraphQL doesn't honour MFA (multi-factor authentication) when using basic authentication.
Technical Analysis
CVE-2020-26136 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 6.5.
From a weakness classification perspective (CWE-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Affected Vendors & Products
silverstripe1 product(s)
silverstripe
Source: NVD CPE · 2 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (8)
→
https://forum.silverstripe.org/c/releasesRelease Notes · Vendor Advisory
→
https://www.silverstripe.org/blog/tag/releaseRelease Notes · Vendor Advisory
→
https://www.silverstripe.org/download/security-releases/Vendor Advisory
→
https://www.silverstripe.org/download/security-releases/cve-2020-26136Exploit · Vendor Advisory
→
https://forum.silverstripe.org/c/releasesRelease Notes · Vendor Advisory
→
https://www.silverstripe.org/blog/tag/releaseRelease Notes · Vendor Advisory
→
https://www.silverstripe.org/download/security-releases/Vendor Advisory
→
https://www.silverstripe.org/download/security-releases/cve-2020-26136Exploit · Vendor Advisory
Quick Facts
CVE IDCVE-2020-26136
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessCWE-287
CISA KEVNo
Affected1 vendor(s)
PublishedJun 8, 2021
Related CVEs (CWE-287)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2020-26136 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.