CVE-2023-32682

MEDIUMNVD 5.45.4—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.4 under NVD CVSS v3. EPSS exploit probability: 0.8% (53rd percentile of EPSS-scored CVEs). 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, nvd
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.8%CVSS: 5.4Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Synapse is a Matrix protocol homeserver written in Python with the Twisted framework. In affected versions it may be possible for a deactivated user to login when using uncommon configurations. This only applies if any of the following are true: 1. JSON Web Tokens are enabled for login via the jwt_config.enabled configuration setting. 2. The local password database is enabled via the password_config.enabled and password_config.localdb_enabled configuration settings *and* a user's password is updated via an admin API after a user is deactivated. Note that the local password database is enabled by default, but it is uncommon to set a user's password after they've been deactivated. Installations that are configured to only allow login via Single Sign-On (SSO) via CAS, SAML or OpenID Connect (OIDC); or via an external password provider (e.g. LDAP) are not affected. If not using JSON Web Tokens, ensure that deactivated users do not have a password set. This issue has been addressed in version 1.85.0. Users are advised to upgrade.

CVSS v3
5.4
EG Score
5.4MEDIUMmedium confidence
EG Risk
25
EG Risk 25/100CISA SSVC

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
Severity54% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.8%
EPSS %ILE
53rd
KEV
Not listed

CISA SSVCTrack at every mission impact level.

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

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

June 6, 2023

Last Modified

November 21, 2024

References (14)

Affected Packages

(2 across 2 ecosystems)
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
matrix-synapse0.19.2+dfsg-3 ... 1.9.1-1~bpo10+1 (269 versions)
  • every version up to 1.90.0-1: fixed in 1.90.0-1
—
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
matrix-synapse0.33.5 ... 1.9.1 (327 versions)
  • every version up to 1.85.0: fixed in 1.85.0
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 25× 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.

Showing the most recent 100 of 187 total refreshes for this CVE.

  1. 2026-10-09 20:05 UTCEPSS rescore
  2. 2026-10-08 17:06 UTCEPSS rescore
  3. 2026-10-07 23:46 UTCEPSS rescore
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  8. 2026-09-30 16:23 UTCEG score recompute
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  11. 2026-09-28 13:49 UTCEPSS rescore
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  18. 2026-09-23 10:53 UTCOSV refresh
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  1. 2026-09-08 21:57 UTCEPSS rescore
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  6. 2026-09-04 05:29 UTCOSV refresh
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  8. 2026-09-02 14:09 UTCEPSS rescore
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  20. 2026-08-19 17:02 UTCEPSS rescore
  21. 2026-08-18 13:46 UTCEPSS rescore
  22. 2026-08-17 16:29 UTCOSV refresh
  23. 2026-08-17 13:45 UTCEPSS rescore
  24. 2026-08-16 14:54 UTCEPSS rescore
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  26. 2026-08-15 01:28 UTCEPSS rescore
  27. 2026-08-13 21:58 UTCEPSS rescore
  28. 2026-08-12 13:48 UTCEPSS rescore
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  30. 2026-08-09 13:44 UTCEPSS rescore
  31. 2026-08-08 16:34 UTCEPSS rescore
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  39. 2026-08-02 11:27 UTCOSV refresh
  40. 2026-08-02 02:25 UTCEPSS rescore
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  42. 2026-07-30 16:26 UTCEPSS rescore
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  44. 2026-07-30 01:28 UTCEPSS rescore
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  46. 2026-07-28 15:34 UTCEPSS rescore
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  48. 2026-07-26 14:52 UTCEPSS rescore
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  50. 2026-07-24 14:16 UTCEPSS rescore
  51. 2026-07-23 14:16 UTCEPSS rescore
  52. 2026-07-23 14:16 UTCEPSS rescore
  53. 2026-07-23 02:23 UTCEG score recompute
  54. 2026-07-22 23:10 UTCEG score recompute
  55. 2026-07-22 14:06 UTCEPSS rescore
  56. 2026-07-21 15:23 UTCEPSS rescore
  57. 2026-07-21 15:23 UTCEPSS rescore
  58. 2026-07-20 17:06 UTCEPSS rescore
  59. 2026-07-19 14:29 UTCEPSS rescore
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  63. 2026-07-18 10:03 UTCEPSS rescore
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  65. 2026-07-16 17:01 UTCEPSS rescore
  66. 2026-07-15 18:49 UTCOSV refresh
  67. 2026-07-15 16:56 UTCEPSS rescore
  68. 2026-07-15 16:56 UTCEPSS rescore
  69. 2026-07-15 01:58 UTCEPSS rescore
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  73. 2026-07-13 06:11 UTCEPSS rescore
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  75. 2026-07-12 05:45 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2023-32682?
CVE-2023-32682 is a medium vulnerability published on June 6, 2023. Synapse is a Matrix protocol homeserver written in Python with the Twisted framework. In affected versions it may be possible for a deactivated user to login when using uncommon configurations. This only applies if any of the following are true: 1. JSON Web Tokens are enabled for login via the…
When was CVE-2023-32682 disclosed?
CVE-2023-32682 was first published on June 6, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-32682 actively exploited?
CVE-2023-32682 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% probability of exploitation in the next 30 days (53rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2023-32682?
CVE-2023-32682 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2023-32682?
A fix for CVE-2023-32682 is available: update to the fixed version the vendor names in its advisory.

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