CVE-2026-73289

HIGHPre-NVD 8.18.1
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 8.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (33rd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Elevated
8.1EG
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).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 8.1Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

RustFS is a distributed object storage system built in Rust. Prior to 1.0.0-beta.12, RustFS evaluates the ForAllValues: and ForAnyValue: set qualifiers with the negated string operators StringNotEquals, StringNotEqualsIgnoreCase, StringNotLike, ArnNotEquals, and ArnNotLike using each other's semantics because crates/policy/src/policy/function/string.rs negates the aggregate result after eval or eval_like instead of negating each request-value predicate before quantification. Partially overlapping policy and request value sets can therefore make an Allow condition grant access to an excluded principal or make a Deny guardrail fail, including policies based on jwt:groups and jwt:roles; absent keys also receive the opposite ForAllValues: and ForAnyValue: behavior. This issue is fixed in version 1.0.0-beta.12.

CVSS v3
8.1
EG Score
8.1HIGHmedium confidence
EG Risk
52
EG Risk 52/100

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)
Severity81% × 45%
The EG Score, 8.1 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
0.4%
EPSS %ILE
33rd
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.

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

Exploitation public PoC (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 12, 2026

Last Modified

September 9, 2026

Advisory Details (3)

Auto-updated Aug 12, 2026
Patch available. Sources: github, github_commit, github_release.
GitHub release Patch Available

RustFS 1.0.0-beta.12 (beta)

Patch available: rustfs/rustfs 1.0.0-beta.12 (pre-release)

https://github.com/rustfs/rustfs/releases/tag/1.0.0-beta.12
GitHub commit

commit 92f83bfe155d (rustfs/rustfs)

Fix landed in rustfs/rustfs commit 92f83bfe155d — awaiting tagged release

https://github.com/rustfs/rustfs/commit/92f83bfe155d8a3b9cdd903086e5b28d52339efb
GitHub advisoryMentions a patch (unverified)

ForAllValues/ForAnyValue negated string conditions are transposed, inverting IAM and bucket-policy decisions · Advisory · rustfs/rustfs · GitHub

https://github.com/rustfs/rustfs/security/advisories/GHSA-v9cp-qfw9-9pfp

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 47× 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 105 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 9 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  2. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  3. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  4. 2026-10-12 15:39 UTCEG score recompute
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  8. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
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  14. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
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  17. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
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  22. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
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  1. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  2. 2026-09-28 01:32 UTCEG score recompute
  3. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
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  5. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  6. 2026-09-25 03:42 UTCEG score recompute
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  8. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  9. 2026-09-22 21:27 UTCEG score recompute
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  11. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.2% · 14th percentile
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  19. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  20. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  21. 2026-09-15 03:48 UTCEG score recompute
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  23. 2026-09-13 17:26 UTCEG score recompute
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  25. 2026-09-12 15:02 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  26. 2026-09-11 19:37 UTCEG score recompute
  27. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  28. 2026-09-10 20:41 UTCEG score recompute
  29. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.2% · 13th percentile
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  35. 2026-09-06 02:22 UTCEG score recompute
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  37. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.2% · 13th percentile
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  47. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 13th percentile
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  59. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  60. 2026-08-22 04:37 UTCEG score recompute
  61. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 14th percentile
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  70. 2026-08-16 22:29 UTCEG score recompute
  71. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 14th percentile

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Frequently asked(5)

What is CVE-2026-73289?
CVE-2026-73289 is a high-severity vulnerability; its CVE record was published on August 12, 2026. RustFS is a distributed object storage system built in Rust. Prior to 1.0.0-beta.12, RustFS evaluates the ForAllValues: and ForAnyValue: set qualifiers with the negated string operators StringNotEquals, StringNotEqualsIgnoreCase, StringNotLike, ArnNotEquals, and ArnNotLike using each other's…
When was the CVE record for CVE-2026-73289 published?
The CVE record for CVE-2026-73289 was published on August 12, 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 9, 2026; the record at its source may have been updated since.
Is CVE-2026-73289 actively exploited?
CVE-2026-73289 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (33rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-73289?
CVE-2026-73289 has a CVSS base score of 8.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-73289?
A fix for CVE-2026-73289 is available: update to the fixed version the vendor names in its advisory.

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