A vulnerability was found in Keycloak before 11.0.1 where DoS attack is possible by sending twenty requests simultaneously to the specified keycloak server, all with a Content-Length header value that exceeds the actual byte count of the request body.
CVE-2020-10758
This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 2.2%, top 19% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EG Risk
- 39(Track)EG Risk 39/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity75% × 45%Exploitation2% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS
- 81.0%
- KEV
- Not listed
Published
September 16, 2020
Last Modified
November 21, 2024
References (4)
- secalert@redhathttps://bugzilla.redhat.com/show_bug.cgi?id=1843849
- secalert@redhathttps://github.com/keycloak/keycloak/commit/bee4ca89897766c4b68856eafe14f1a3dad34251
- af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1843849
- af854a3a-2127-422b-91ae-364da2661108https://github.com/keycloak/keycloak/commit/bee4ca89897766c4b68856eafe14f1a3dad34251
Vendor Advisories for CVE-2020-10758(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Patch Availability(5)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| redhat | patch | 2020-09-02 | redhat |
| redhat | patch | 2020-08-18 | redhat |
| redhat | rh-sso7-keycloak-0:9.0.5-1.redhat_00001.1.el6sso | 2020-08-18 | redhat |
| redhat | rh-sso7-keycloak-0:9.0.5-1.redhat_00001.1.el7sso | 2020-08-18 | redhat |
| redhat | rh-sso7-keycloak-0:9.0.5-1.redhat_00001.1.el8sso | 2020-08-18 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(1 across 1 ecosystem)
Maven(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| org.keycloak:keycloak-parent | 1.0-alpha-1 ... 9.0.3 (114 versions) | 11.0.1 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Additional Vendor Advisories
(4)
Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.
Data Freshness Timeline
(refreshed 13× in last 7d / 43× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-23 01:48 UTCEG score recompute
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- 2026-05-23 07:44 UTCVendor advisory
Related CVEs(same vendor + same CWE)
Same vendor
10 shownredhat
Same CWE
10 shownCWE-770
- CVE-2018-20033EG 9.8CRITICAL
- CVE-2019-11479NVD 7.5EG 9.0EPSS 100%HIGH
- CVE-2019-11478NVD 5.3EG 9.0EPSS 100%MEDIUM
- CVE-2019-10088EG 8.8EPSS 91%HIGH
- CVE-2018-15462EG 8.6HIGH
- CVE-2018-15460EG 8.6HIGH
- CVE-2018-0137EG 8.6HIGH
- CVE-2008-5180NVD 5.3EG 7.9EPSS 99%MEDIUM
- CVE-2019-10094EG 7.8HIGH
- CVE-2018-16865EG 7.8HIGH
Frequently asked(5)
What is CVE-2020-10758?
When was CVE-2020-10758 disclosed?
Is CVE-2020-10758 actively exploited?
What is the CVSS score of CVE-2020-10758?
How do I remediate CVE-2020-10758?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2020-10758
Is Your Infrastructure Affected by CVE-2020-10758?
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