CVE-2026-73208

HIGHPre-NVD 7.47.4
EchelonGraph scoreMEDIUM confidence

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

Score 7.4 from GitHub Security Advisory (severity: HIGH) published 2026-08-28. A secondary CVSS source baseline 7.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — Patch released this week
7.4EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 7.4Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

An attacker that holds a token intended for a different purpose can authenticate, because when an OAuth2 token response does not contain a scope claim, the audience claim is used in its place and checked against the configured required scopes. These are different concepts, and the audience claim does not describe what a token is allowed to do. A token that grants no relevant permissions can be accepted because its intended recipient value happens to match a configured scope name, granting access that should have been denied. It also hides an identity provider misconfiguration where scopes are not being issued at all. Ensure the identity provider issues a scope claim for all tokens used with Dovecot, and that configured scope names do not match audience values. Update to non-vulnerable version. No publicly available exploits are known.

CVSS v3
7.4
EG Score
7.4HIGHmedium confidence
EG Risk
33
EG Risk 33/100

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 computed (value × EchelonGraph’s weight)
Severity74% × 45%
The EG Score, 7.4 of 10.
Exploitation0.3% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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.
EPSS PROB
0.3%
EPSS %ILE
22nd
KEV
Not listed

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

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (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

August 28, 2026

Last Modified

September 3, 2026

Advisory Details (1)

Auto-updated Aug 28, 2026
Patch available.
Web page
https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0003.json

Vendor Advisories for CVE-2026-73208(4)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(3)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatdovecot-1:2.3.16-18.el9_8.82026-10-12redhat
redhatdovecot-1:2.3.21-19.el10_2.82026-10-08redhat
redhatdovecot-1:2.3.16-16.el8_102026-10-06redhat

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

(5 across 5 ecosystems)
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
dovecot—
  • every version up to 2.4.5-r0: fixed in 2.4.5-r0
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
dovecot—
  • every version up to 2.4.5-r0: fixed in 2.4.5-r0
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
dovecot1:2.3.19.1+dfsg1-2.1 ... 1:2.4.5+dfsg1-3 (43 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
dovecot1:2.4.1+dfsg1-6 ... 1:2.4.1+dfsg1-6+deb13u6 (7 versions)
  • every version up to 1:2.4.1+dfsg1-6+deb13u7: fixed in 1:2.4.1+dfsg1-6+deb13u7
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
dovecot1:2.4.1+dfsg1-6 ... 1:2.4.4+dfsg1-2 (12 versions)
  • every version up to 1:2.4.5+dfsg1-1: fixed in 1:2.4.5+dfsg1-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 25× in last 7d / 111× 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 100 of 181 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. None are among the latest 100 rows. The 81 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  2. 2026-10-13 07:58 UTCEG score recompute
  3. 2026-10-13 07:58 UTCVendor advisory
  4. 2026-10-13 07:58 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  5. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  6. 2026-10-12 15:41 UTCEG score recompute
  7. 2026-10-11 19:26 UTCEG score recompute
  8. 2026-10-11 16:42 UTCEG score recompute
  9. 2026-10-11 14:02 UTCEG score recompute
  10. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  11. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  12. 2026-10-10 12:26 UTCVendor advisory
  13. 2026-10-10 12:26 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  14. 2026-10-10 00:58 UTCEG score recompute
  15. 2026-10-10 00:58 UTCVendor advisory
  16. 2026-10-10 00:58 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  17. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  18. 2026-10-09 02:42 UTCEG score recompute
  19. 2026-10-09 02:42 UTCVendor advisory
  20. 2026-10-09 02:42 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  21. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  22. 2026-10-08 00:54 UTCEG score recompute
  23. 2026-10-08 00:54 UTCVendor advisory
  24. 2026-10-08 00:54 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  25. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
Show 75 more
  1. 2026-10-07 06:24 UTCVendor advisory
  2. 2026-10-07 06:24 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  3. 2026-10-06 18:55 UTCEG score recompute
  4. 2026-10-06 18:55 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  5. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  6. 2026-10-06 07:28 UTCEG score recompute
  7. 2026-10-06 07:28 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  8. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  9. 2026-10-05 16:49 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  10. 2026-10-05 04:31 UTCEG score recompute
  11. 2026-10-05 04:31 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  12. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  13. 2026-10-04 16:37 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  14. 2026-10-04 05:10 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  15. 2026-10-03 17:43 UTCEG score recompute
  16. 2026-10-03 17:43 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  17. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  18. 2026-10-03 06:17 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  19. 2026-10-02 18:50 UTCEG score recompute
  20. 2026-10-02 18:50 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  21. 2026-10-02 07:15 UTCEG score recompute
  22. 2026-10-02 07:15 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  23. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  24. 2026-10-01 19:49 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  25. 2026-10-01 07:16 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  26. 2026-09-30 19:50 UTCEG score recompute
  27. 2026-09-30 19:50 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  28. 2026-09-30 03:51 UTCEG score recompute
  29. 2026-09-30 03:51 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  30. 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  31. 2026-09-29 08:36 UTCEG score recompute
  32. 2026-09-29 08:36 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  33. 2026-09-28 21:09 UTCEG score recompute
  34. 2026-09-28 21:09 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  35. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  36. 2026-09-28 06:46 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  37. 2026-09-27 19:19 UTCEG score recompute
  38. 2026-09-27 19:19 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  39. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  40. 2026-09-27 07:52 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  41. 2026-09-26 20:25 UTCEG score recompute
  42. 2026-09-26 20:25 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  43. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  44. 2026-09-26 08:44 UTCEG score recompute
  45. 2026-09-26 08:44 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  46. 2026-09-25 13:35 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  47. 2026-09-25 01:57 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  48. 2026-09-24 14:30 UTCEG score recompute
  49. 2026-09-24 14:30 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  50. 2026-09-24 02:39 UTCEG score recompute
  51. 2026-09-24 02:39 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  52. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  53. 2026-09-23 15:12 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  54. 2026-09-23 03:45 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  55. 2026-09-22 16:19 UTCEG score recompute
  56. 2026-09-22 16:19 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  57. 2026-09-22 04:45 UTCEG score recompute
  58. 2026-09-22 04:45 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  59. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  60. 2026-09-21 17:17 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  61. 2026-09-21 05:21 UTCEG score recompute
  62. 2026-09-21 05:20 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  63. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  64. 2026-09-20 17:43 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  65. 2026-09-20 06:16 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  66. 2026-09-19 18:45 UTCEG score recompute
  67. 2026-09-19 18:45 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  68. 2026-09-19 07:18 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  69. 2026-09-18 19:51 UTCEG score recompute
  70. 2026-09-18 19:51 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  71. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  72. 2026-09-18 08:24 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  73. 2026-09-17 20:51 UTCEG score recompute
  74. 2026-09-17 20:51 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4
  75. 2026-09-17 06:48 UTCGHSA enrichmentGHSA-856w-5q8f-fq73 · GitHub severity HIGH · GitHub CVSS 7.4

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-73208?
CVE-2026-73208 is a high-severity vulnerability; its CVE record was published on August 28, 2026. An attacker that holds a token intended for a different purpose can authenticate, because when an OAuth2 token response does not contain a scope claim, the audience claim is used in its place and checked against the configured required scopes. These are different concepts, and the audience claim…
When was the CVE record for CVE-2026-73208 published?
The CVE record for CVE-2026-73208 was published on August 28, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 3, 2026; the record at its source may have been updated since.
Is CVE-2026-73208 actively exploited?
CVE-2026-73208 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (22nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-73208?
CVE-2026-73208 has a CVSS base score of 7.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-73208?
A fix for CVE-2026-73208 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-73208 are linked in the Vendor Advisories panel on this page.

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