CVE-2020-10770 (GCVE-0-2020-10770)

Vulnerability from cvelistv5 – Published: 2020-12-15 00:00 – Updated: 2024-08-04 11:14
VLAI Shadowserver Previdian
Summary
A flaw was found in Keycloak before 13.0.0, where it is possible to force the server to call out an unverified URL using the OIDC parameter request_uri. This flaw allows an attacker to use this parameter to execute a Server-side request forgery (SSRF) attack.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
n/a keycloak Affected: keycloak 13.0.0
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: e7940a09-54d4-449f-b678-9caeed08ec0e

Vulnerability ID: CVE-2020-10770

Status: Confirmed

Status Updated: 2026-07-15 00:00 UTC

Exploited: Yes

Characteristics
Severity: 53.0
Timestamps
First Seen: 2023-10-23
Asserted: 2023-10-23
Last Seen: 2026-07-15
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: Keycloak / Keycloak | Class: other-software | Severity: Medium (CVSS 5.3) | IoT: no | In CISA KEV: no | Honeypot connections on 2026-07-15: 2
Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver

Details
1D 1
Iot no
Feed Shadowserver Foundation honeypot/exploited-vulnerabilities
Type http-scan
Class other-software
7D Avg 0
Vendor Keycloak
30D Avg 0
90D Avg 0
Product Keycloak
Cisa Kev no
Connections 2
Observation Date 2026-07-15
Vulnerability Class CVSS
Vulnerability Score 5.3
Vulnerability Severity Medium
References
Created: 2026-06-30 09:23 UTC | Updated: 2026-07-17 01:01 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 5e58d062-989f-481e-bf08-351bd25e42e7

Vulnerability ID: CVE-2020-10770

Status: Confirmed

Status Updated: 2020-12-15 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2020-12-15
Asserted: 2020-12-15
Scope
Notes: KEVIntel entry: A flaw was found in Keycloak before 13.0.0, where it is possible to force the server to call out an unverified URL using the OIDC parameter... | Affected: n/a / keycloak | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title A flaw was found in Keycloak before 13.0.0, where it is possible to force the server to call out an unverified URL using the OIDC parameter...
Vendor n/a
Product keycloak
Added Date 2020-12-15T00:00:00.000Z
Cvss Score None
Epss Score None
Cvss Severity None
Epss Percentile None
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-06-23 14:06 UTC | Updated: 2026-07-10 06:14 UTC
Show details on NVD website
To clipboard 

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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.