CASCACascade Atlas

Evidence dossier

CVE-2021-21311

SSRF in adminer

75.0–92.0Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

Adminer is an open-source database management in a single PHP file. In adminer from version 4.0.0 and before 4.7.9 there is a server-side request forgery vulnerability. Users of Adminer versions bundling all drivers (e.g. `adminer.php`) are affected. This is fixed in version 4.7.9.

State
PUBLISHED
Published
Feb 11, 2021
Updated
Oct 21, 2025
Evidence coverage
72%
CISA KEVCatalog member

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

FIRST EPSS90.07%

2026-07-18 · v2026.06.15 · percentile 99.8%

Source stateConflict visible

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

CISA-ADPindependent enrichment
container

CISA ADP Vulnrichment

CVEderivative copy
container

CVE Program Container

GitHub_Moriginal assertion
container

SSRF in adminer

CISA KEVoriginal assertion
observed_exploitation

Adminer Server-Side Request Forgery Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.900720000000; percentile 0.997820000000

Applicability

Cited product scope

Trace impact →
vranaadminer
[{"status": "affected", "version": ">= 4.0.0, < 4.7.9"}]unknown
Unknown vendorUnknown product
cpe:2.3:a:adminer:adminer:*:*:*:*:*:*:*:*; start including 4.0.0; end excluding 4.7.9supported
Unknown vendorUnknown product
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*supported

Assessments

CVSS by origin

7.2
nvd@nist.govCVSS 3.1 · role PrimaryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
6.4
nvd@nist.govCVSS 2.0 · role PrimaryAV:N/AC:L/Au:N/C:P/I:P/A:N
7.2
security-advisories@github.comCVSS 3.1 · role SecondaryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
7.2
GitHub_MCVSS 3.1 · role unknownCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Limitations and unknowns

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
  • NVD-carried upstream facts remain derivative and are not independent corroboration.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.