CVE-2020-26136 json
Authentication bypass in SilverStripe GraphQL
published 2021-06-08 5 y ago modified 2026-06-17 4 mo ago also BIT-silverstripe-2020-26136 , EUVD-2021-1357 , GHSA-mg2g-8pwj-r2j2
- cvss
- 6.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.2%
- EPSS 1.2% chance of exploitation in 30 days, percentile 67%
- public exploits
- 0
- none known
Summary
In SilverStripe through 4.6.0-rc1, GraphQL doesn't honour MFA (multi-factor authentication) when using basic authentication.
Patch / fix
- packagist silverstripe/graphql 3.5.0, 4.0.0-alpha2
- bitnami silverstripe 4.6.0
- silverstripe silverstripe 4.6.0
Exploit prediction
1.16% chance of exploitation in the next 30 days, higher than 67% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- silverstripe.org https://www.silverstripe.org/download/security-releases/cve-2020-26136 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| GitHub | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:N/I:P/A:N |
| OSV | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | silverstripe/graphql | >=3.0.0, <3.5.0 >=4.0.0-alpha1, <4.0.0-alpha2 |
3.5.0 4.0.0-alpha2 |
| bitnami | silverstripe | <4.6.0 >=4.6.0-rc1, <=4.6.0-rc1 |
4.6.0 |
Classification
References
-
silverstripe.org
/download/security-releases/cve-2020-26136
web, exploit, vendor-advisory
-
silverstripe.org
/download/security-releases/
vendor-advisory, web
-
silverstripe.org
/blog/tag/release
web, release-notes, vendor-advisory
-
forum.silverstripe.org
/c/releases
web, release-notes, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2020-26136
advisory
-
github.com
/FriendsOfPHP/security-advisories/blob/master/silverstripe/graphql/CVE-2020-26136.yaml
web
-
silverstripe.org
/download/security-releases
web
Sources
- CVE List CVE-2020-26136
- GitHub Advisory GHSA-mg2g-8pwj-r2j2
- NVD CVE-2020-26136
- OSV BIT-silverstripe-2020-26136
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.