CVE-2026-7307

HIGHPre-NVD 7.57.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-05-19. A secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this week

Also known asEUVD-2026-30883 (ENISA EUVD) · GHSA-p5mv-gj8j-xqgf (GitHub Security Advisories)Source: ENISA EUVD

7.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.9%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A flaw was found in Keycloak. A remote, unauthenticated attacker can send a specially crafted XML input to the Security Assertion Markup Language (SAML) endpoint. This malicious input can cause high CPU usage and worker thread starvation, leading to a Denial of Service (DoS) where the server becomes unavailable.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity75% × 45%
Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.9% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.9%
EPSS %ILE
59th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.

EG Severity
7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.9% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-25). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

May 19, 2026

Last Modified

October 26, 2026

Advisory Details (6)

Auto-updated Jun 11, 2026
Patch available. Sources: redhat.
Red Hat

2476526 – (CVE-2026-7307) CVE-2026-7307 keycloak: Keycloak: Denial of Service via specially crafted SAML input

https://bugzilla.redhat.com/show_bug.cgi?id=2476526
Red HatMentions a patch (unverified)

cve-details

https://access.redhat.com/security/cve/CVE-2026-7307
Red HatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2026:19597
Red HatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2026:19596
Red HatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2026:19595
Red HatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2026:19594

Patch Availability(8)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatrh-sso7-keycloak-0:18.0.20-1.redhat_00001.1.el8sso2026-10-06redhat
redhatrh-sso7-keycloak-0:18.0.20-1.redhat_00001.1.el7sso2026-10-06redhat
redhatrh-sso7-keycloak-0:18.0.20-1.redhat_00001.1.el9sso2026-10-06redhat
redhatrh-sso-7/sso76-openshift-rhel8:7.6-852026-10-05redhat
redhatkeycloak-services2026-10-05redhat
redhatrhbk/keycloak-rhel9-operator:26.2-212026-05-20redhat
redhatrhbk/keycloak-rhel92026-05-20redhat
redhatrhbk/keycloak-rhel9-operator:26.4-172026-05-20redhat

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)
PackageVulnerable rangeFix by version rangeDependents
org.keycloak:keycloak-saml-core1.1.0.Beta1 ... 9.0.3 (207 versions)
  • every version up to 26.6.2: fixed in 26.6.2
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 9× in last 7d / 54× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 96 of 307 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 4 repeat rows among the latest 100 are merged into the row they repeat. The 211 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  2. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  3. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  4. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  5. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  6. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  7. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  8. 2026-10-26 13:28 UTCEG score recompute
  9. 2026-10-26 13:28 UTCVendor advisory
  10. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  11. 2026-10-25 14:06 UTCEG score recompute
  12. 2026-10-24 16:33 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  13. 2026-10-23 16:32 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  14. 2026-10-22 16:35 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  15. 2026-10-21 16:33 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  16. 2026-10-20 18:36 UTCEG score recompute
  17. 2026-10-20 18:36 UTCVendor advisory
  18. 2026-10-20 16:33 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  19. 2026-10-19 16:33 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  20. 2026-10-18 16:33 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  21. 2026-10-18 03:15 UTCEG score recompute
  22. 2026-10-17 16:35 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  23. 2026-10-16 16:44 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  24. 2026-10-15 16:33 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  25. 2026-10-14 16:33 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
Show 71 more
  1. 2026-10-13 16:35 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  2. 2026-10-13 08:00 UTCEG score recompute
  3. 2026-10-13 08:00 UTCVendor advisory
  4. 2026-10-12 16:35 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  5. 2026-10-12 15:41 UTCEG score recompute
  6. 2026-10-11 19:26 UTCEG score recompute
  7. 2026-10-11 16:42 UTCEG score recompute
  8. 2026-10-11 14:02 UTCEG score recompute
  9. 2026-10-11 13:49 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  10. 2026-10-10 20:00 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  11. 2026-10-09 20:07 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  12. 2026-10-08 17:13 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
  13. 2026-10-07 23:48 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  14. 2026-10-06 17:20 UTCEG score recompute
  15. 2026-10-06 17:20 UTCVendor advisory
  16. 2026-10-06 16:52 UTCEG score recompute
  17. 2026-10-06 16:52 UTCVendor advisory
  18. 2026-10-06 15:18 UTCEPSS rescoreEPSS 1.0% · 61st percentile
  19. 2026-10-06 12:28 UTCEG score recompute
  20. 2026-10-06 12:28 UTCVendor advisory
  21. 2026-10-06 11:50 UTCEG score recompute
  22. 2026-10-06 11:50 UTCVendor advisory
  23. 2026-10-06 00:26 UTCEG score recompute
  24. 2026-10-06 00:26 UTCVendor advisory
  25. 2026-10-05 23:39 UTCEG score recompute
  26. 2026-10-05 23:39 UTCVendor advisory
  27. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  28. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  29. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  30. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  31. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  32. 2026-09-29 15:25 UTCEG score recompute
  33. 2026-09-29 15:25 UTCVendor advisory
  34. 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  35. 2026-09-29 14:59 UTCEG score recompute
  36. 2026-09-29 14:59 UTCVendor advisory
  37. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  38. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  39. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  40. 2026-09-26 00:28 UTCEPSS rescoreEPSS 0.9% · 56th percentile
  41. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.9% · 56th percentile
  42. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  43. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  44. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  45. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  46. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  47. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  48. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  49. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  50. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  51. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  52. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  53. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  54. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  55. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  56. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  57. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  58. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  59. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  60. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  61. 2026-08-27 13:02 UTCEG score recompute
  62. 2026-08-27 13:02 UTCVendor advisory
  63. 2026-08-26 17:45 UTCEG score recompute
  64. 2026-08-26 17:45 UTCVendor advisory
  65. 2026-08-26 16:07 UTCEG score recompute
  66. 2026-08-26 16:07 UTCVendor advisory
  67. 2026-08-26 14:47 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  68. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  69. 2026-08-24 14:18 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  70. 2026-08-23 17:08 UTCEG score recompute
  71. 2026-08-23 17:08 UTCVendor advisory

Frequently asked(5)

What is CVE-2026-7307?
CVE-2026-7307 is a high-severity vulnerability; its CVE record was published on May 19, 2026. A flaw was found in Keycloak. A remote, unauthenticated attacker can send a specially crafted XML input to the Security Assertion Markup Language (SAML) endpoint. This malicious input can cause high CPU usage and worker thread starvation, leading to a Denial of Service (DoS) where the server…
When was CVE-2026-7307 made public?
CVE-2026-7307 was made public on May 19, 2026: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on May 19, 2026. EchelonGraph's copy of the record carries a last-modified date of October 26, 2026; the record at its source may have been updated since.
Is CVE-2026-7307 actively exploited?
CVE-2026-7307 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.9% probability of exploitation in the next 30 days (59th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-7307?
CVE-2026-7307 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-7307?
A fix for CVE-2026-7307 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-7307 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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