CVE-2026-45694

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2% (13th 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, secondary
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 5.4Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

LibreNMS is a network monitoring system. In versions up to and including 26.4.0, the Proxmox application view is vulnerable to reflected cross-site scripting through the user-supplied instance and vmid GET parameters, which are reflected into the page title without adequate encoding. The parameters are placed into the page title with only strip_tags applied, and the title is then written into an inline document.title assignment through string interpolation, so a single quote terminates the JavaScript string and the remaining input runs as script. An attacker who lures an authenticated user into following a crafted link can execute script in that user's session, enabling actions such as theft of session data. This issue is fixed in version 26.5.0.

CVSS v3
5.4
EG Score
5.4MEDIUMmedium confidence
EG Risk
24
EG Risk 24/100CISA 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%
Exploitation0% × 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
0.2%
EPSS %ILE
13th
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

August 12, 2026

Last Modified

September 9, 2026

Advisory Details (2)

Auto-updated Aug 26, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit.
github_commit

commit 0be1bfd7746c (librenms/librenms)

Fix landed in librenms/librenms commit 0be1bfd7746c — awaiting tagged release

https://github.com/librenms/librenms/commit/0be1bfd7746cea26bf7da40e82b70f75b724d0f8
githubMentions a patch (unverified)🟡 PoC Available

Reflected XSS via Proxmox instance/vmid GET parameters injected into document.title JavaScript assignment · Advisory · librenms/librenms · GitHub

https://github.com/librenms/librenms/security/advisories/GHSA-jmqm-f8q4-v7wx

Vendor Advisories for CVE-2026-45694(1)

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

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFix by version rangeDependents
librenms/librenms1.19 ... 26.4.1 (154 versions)
  • every version up to 26.5.0: fixed in 26.5.0
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 42× 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. 2026-10-09 20:07 UTCEPSS rescore
  2. 2026-10-08 17:12 UTCEPSS rescore
  3. 2026-10-07 23:48 UTCEPSS rescore
  4. 2026-10-06 17:28 UTCEG score recompute
  5. 2026-10-06 15:18 UTCEPSS rescore
  6. 2026-10-05 17:43 UTCEPSS rescore
  7. 2026-10-04 23:22 UTCEPSS rescore
  8. 2026-10-03 20:00 UTCEG score recompute
  9. 2026-10-03 14:25 UTCEPSS rescore
  10. 2026-10-02 08:21 UTCEG score recompute
  11. 2026-10-01 19:50 UTCEPSS rescore
  12. 2026-09-30 21:56 UTCEG score recompute
  13. 2026-09-30 15:03 UTCEPSS rescore
  14. 2026-09-28 09:37 UTCEG score recompute
  15. 2026-09-27 13:48 UTCEPSS rescore
  16. 2026-09-27 09:56 UTCEG score recompute
  17. 2026-09-26 15:58 UTCEPSS rescore
  18. 2026-09-25 03:42 UTCEG score recompute
  19. 2026-09-23 23:40 UTCEG score recompute
  20. 2026-09-23 17:53 UTCEPSS rescore
  21. 2026-09-22 23:59 UTCEG score recompute
  22. 2026-09-22 00:18 UTCEG score recompute
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  24. 2026-09-20 20:15 UTCEPSS rescore
  25. 2026-09-19 23:55 UTCEG score recompute
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  1. 2026-09-19 00:14 UTCEG score recompute
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-18 00:32 UTCEG score recompute
  4. 2026-09-17 19:31 UTCEPSS rescore
  5. 2026-09-17 00:22 UTCEG score recompute
  6. 2026-09-16 14:08 UTCEPSS rescore
  7. 2026-09-16 05:15 UTCEPSS rescore
  8. 2026-09-15 22:00 UTCEG score recompute
  9. 2026-09-13 20:13 UTCEG score recompute
  10. 2026-09-13 16:47 UTCEPSS rescore
  11. 2026-09-12 20:32 UTCEG score recompute
  12. 2026-09-12 15:01 UTCEPSS rescore
  13. 2026-09-11 20:51 UTCEG score recompute
  14. 2026-09-11 14:53 UTCEPSS rescore
  15. 2026-09-11 09:37 UTCEPSS rescore
  16. 2026-09-10 21:09 UTCEG score recompute
  17. 2026-09-10 09:34 UTCEPSS rescore
  18. 2026-09-08 01:06 UTCEG score recompute
  19. 2026-09-07 16:01 UTCEPSS rescore
  20. 2026-09-07 01:24 UTCEG score recompute
  21. 2026-09-06 13:47 UTCEPSS rescore
  22. 2026-09-06 01:23 UTCEG score recompute
  23. 2026-09-05 01:26 UTCEG score recompute
  24. 2026-09-04 05:06 UTCEPSS rescore
  25. 2026-09-02 23:38 UTCEG score recompute
  26. 2026-09-02 14:12 UTCEPSS rescore
  27. 2026-09-01 13:54 UTCEPSS rescore
  28. 2026-09-01 11:45 UTCEG score recompute
  29. 2026-08-31 09:53 UTCEG score recompute
  30. 2026-08-30 19:17 UTCEPSS rescore
  31. 2026-08-30 08:24 UTCEG score recompute
  32. 2026-08-30 01:22 UTCEPSS rescore
  33. 2026-08-29 08:38 UTCEG score recompute
  34. 2026-08-28 21:41 UTCEPSS rescore
  35. 2026-08-27 17:24 UTCEG score recompute
  36. 2026-08-27 14:25 UTCEPSS rescore
  37. 2026-08-26 22:24 UTCEG score recompute
  38. 2026-08-12 15:21 UTCEG score recompute

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-45694?
CVE-2026-45694 is a medium vulnerability published on August 12, 2026. LibreNMS is a network monitoring system. In versions up to and including 26.4.0, the Proxmox application view is vulnerable to reflected cross-site scripting through the user-supplied instance and vmid GET parameters, which are reflected into the page title without adequate encoding. The parameters…
When was CVE-2026-45694 disclosed?
CVE-2026-45694 was first published on August 12, 2026, with the most recent update on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45694 actively exploited?
CVE-2026-45694 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (13th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-45694?
CVE-2026-45694 has a CVSS base score of 5.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-45694?
A fix for CVE-2026-45694 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-45694 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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