CVE-2026-70463

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 73% 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).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

rsync 3.1.0 before 3.5.0 contains an authorization bypass in auth users directive parsing. The auth users parser uses comma-only tokenization when splitting the user list, which fails to correctly handle entries of the form @Group Name where the group name contains a space. The space within the group name causes the parser to split the entry at the space boundary, discarding the deny rule associated with the group. An authenticated user whose username or group membership would be denied by an @Group Name auth users entry can connect to a restricted module because the deny rule is silently discarded during parsing.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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 computed
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
27%
KEV
Not listed

Published

August 13, 2026

Last Modified

August 26, 2026

Advisory Details (3)

Auto-updated Aug 13, 2026
Patch available. Sources: github, github_release.
generic

rsync 3.1.0 < 3.5.0 Authorization Bypass via auth users Directive Parsing | Advisories | VulnCheck

https://www.vulncheck.com/advisories/rsync-authorization-bypass-via-auth-users-directive-parsing
github_release Patch Available

v3.5.0

Patch available: RsyncProject/rsync v3.5.0

https://github.com/RsyncProject/rsync/releases/tag/v3.5.0
github Patch Available

rsync: "auth users" ignores documented comma-only parsing, silently skipping a deny/read-only rule · Advisory · RsyncProject/rsync · GitHub

https://github.com/RsyncProject/rsync/security/advisories/GHSA-pfj8-79vq-xgvr

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 36× 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.

  1. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-29 07:40 UTCEG score recompute
  3. 2026-08-28 21:42 UTCEPSS rescore
  4. 2026-08-27 16:25 UTCEG score recompute
  5. 2026-08-26 17:26 UTCEG score recompute
  6. 2026-08-26 14:47 UTCEPSS rescore
  7. 2026-08-25 20:40 UTCEG score recompute
  8. 2026-08-25 13:49 UTCEPSS rescore
  9. 2026-08-24 21:36 UTCEG score recompute
  10. 2026-08-24 09:44 UTCEG score recompute
  11. 2026-08-23 10:50 UTCEG score recompute
  12. 2026-08-23 00:19 UTCEPSS rescore
  13. 2026-08-22 00:27 UTCEG score recompute
  14. 2026-08-21 23:49 UTCEPSS rescore
  15. 2026-08-21 01:31 UTCEG score recompute
  16. 2026-08-20 22:56 UTCEPSS rescore
  17. 2026-08-20 02:03 UTCEG score recompute
  18. 2026-08-19 17:04 UTCEPSS rescore
  19. 2026-08-18 15:36 UTCEG score recompute
  20. 2026-08-18 13:49 UTCEPSS rescore
  21. 2026-08-18 13:49 UTCEPSS rescore
  22. 2026-08-17 16:29 UTCEG score recompute
  23. 2026-08-17 13:47 UTCEPSS rescore
  24. 2026-08-16 17:25 UTCEG score recompute
  25. 2026-08-16 14:56 UTCEPSS rescore
Show 11 more
  1. 2026-08-16 14:56 UTCEPSS rescore
  2. 2026-08-16 05:57 UTCEG score recompute
  3. 2026-08-16 02:15 UTCEPSS rescore
  4. 2026-08-15 07:04 UTCEG score recompute
  5. 2026-08-15 01:31 UTCEPSS rescore
  6. 2026-08-14 19:36 UTCEG score recompute
  7. 2026-08-14 18:34 UTCEG score recompute
  8. 2026-08-14 13:14 UTCEG score recompute
  9. 2026-08-13 15:23 UTCEG score recompute
  10. 2026-08-13 15:12 UTCEG score recompute
  11. 2026-08-13 15:11 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-70463?
CVE-2026-70463 is a high vulnerability published on August 13, 2026. rsync 3.1.0 before 3.5.0 contains an authorization bypass in auth users directive parsing. The auth users parser uses comma-only tokenization when splitting the user list, which fails to correctly handle entries of the form @Group Name where the group name contains a space. The space within the…
When was CVE-2026-70463 disclosed?
CVE-2026-70463 was first published in the National Vulnerability Database on August 13, 2026, with the most recent update on August 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-70463 actively exploited?
CVE-2026-70463 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 73.1% of all scored CVEs.
What is the CVSS score of CVE-2026-70463?
CVE-2026-70463 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-70463?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-70463, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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