CVE-2026-49132

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreHIGH confidence

Score 5.4 from GitHub Security Advisory published 2026-08-03. the CNA's CVSS baseline 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this week
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.4Exploit: None knownExposed: 0

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

OPNsense before 26.1.9 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject arbitrary HTML or JavaScript by embedding payloads in the certificate description field via the trust certificate API. The unsanitized description value is persisted and later rendered in the Dashboard Certificates widget through Certificates.js, which interpolates the raw value into HTML attribute and text content sinks without encoding, causing injected scripts to execute in the browser of any authenticated user who views the Dashboard, enabling session hijacking or credential theft.

CVSS v3
5.4
EG Score
5.4(high)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity54% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
1%
KEV
Not listed

Published

August 3, 2026

Last Modified

August 14, 2026

Advisory Details (3)

Auto-updated Aug 3, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

OPNsense < 26.1.9 Stored XSS via Certificate Description Field | Advisories | VulnCheck

https://www.vulncheck.com/advisories/opnsense-stored-xss-via-certificate-description-field
github_commit

commit 12b021ff11db (opnsense/core)

Fix landed in opnsense/core commit 12b021ff11db — awaiting tagged release

https://github.com/opnsense/core/commit/12b021ff11db38705e92ac4c9af5e07d602da6ba
generic

26.1 “Witty Woodpecker” Series — OPNsense documentation

https://docs.opnsense.org/releases/CE_26.1.html#june-02-2026

Vendor Advisories for CVE-2026-49132(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 21× in last 7d / 51× 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. 2026-08-21 02:13 UTCEG score recompute
  2. 2026-08-21 02:13 UTCGHSA enrichment
  3. 2026-08-20 22:55 UTCEPSS rescore
  4. 2026-08-20 04:23 UTCEG score recompute
  5. 2026-08-20 04:23 UTCGHSA enrichment
  6. 2026-08-19 17:04 UTCEPSS rescore
  7. 2026-08-19 06:32 UTCGHSA enrichment
  8. 2026-08-18 08:40 UTCEG score recompute
  9. 2026-08-18 08:40 UTCGHSA enrichment
  10. 2026-08-17 13:47 UTCEPSS rescore
  11. 2026-08-17 10:42 UTCEG score recompute
  12. 2026-08-17 10:42 UTCGHSA enrichment
  13. 2026-08-16 14:56 UTCEPSS rescore
  14. 2026-08-16 12:52 UTCEG score recompute
  15. 2026-08-16 12:52 UTCGHSA enrichment
  16. 2026-08-16 02:14 UTCEPSS rescore
  17. 2026-08-15 15:02 UTCEG score recompute
  18. 2026-08-15 15:02 UTCGHSA enrichment
  19. 2026-08-15 01:30 UTCEPSS rescore
  20. 2026-08-14 17:11 UTCEG score recompute
  21. 2026-08-14 17:11 UTCGHSA enrichment
  22. 2026-08-13 22:00 UTCEPSS rescore
  23. 2026-08-13 20:48 UTCGHSA enrichment
  24. 2026-08-12 22:58 UTCGHSA enrichment
  25. 2026-08-12 01:07 UTCEG score recompute
Show 26 more
  1. 2026-08-12 01:07 UTCGHSA enrichment
  2. 2026-08-11 03:17 UTCEG score recompute
  3. 2026-08-11 03:17 UTCGHSA enrichment
  4. 2026-08-11 00:00 UTCEPSS rescore
  5. 2026-08-10 05:27 UTCEG score recompute
  6. 2026-08-10 05:27 UTCGHSA enrichment
  7. 2026-08-09 13:46 UTCEPSS rescore
  8. 2026-08-09 07:37 UTCEG score recompute
  9. 2026-08-09 07:37 UTCGHSA enrichment
  10. 2026-08-08 16:37 UTCEPSS rescore
  11. 2026-08-08 09:47 UTCEG score recompute
  12. 2026-08-08 09:47 UTCGHSA enrichment
  13. 2026-08-07 11:56 UTCGHSA enrichment
  14. 2026-08-06 14:06 UTCEG score recompute
  15. 2026-08-06 14:06 UTCGHSA enrichment
  16. 2026-08-06 13:47 UTCEPSS rescore
  17. 2026-08-05 19:17 UTCEPSS rescore
  18. 2026-08-05 16:15 UTCGHSA enrichment
  19. 2026-08-04 18:25 UTCEG score recompute
  20. 2026-08-04 18:25 UTCGHSA enrichment
  21. 2026-08-04 17:59 UTCEG score recompute
  22. 2026-08-04 17:59 UTCGHSA enrichment
  23. 2026-08-04 15:10 UTCEPSS rescore
  24. 2026-08-03 21:20 UTCEG score recompute
  25. 2026-08-03 20:43 UTCEG score recompute
  26. 2026-08-03 20:43 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-49132?
CVE-2026-49132 is a medium vulnerability published on August 3, 2026. OPNsense before 26.1.9 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject arbitrary HTML or JavaScript by embedding payloads in the certificate description field via the trust certificate API. The unsanitized description value is persisted and later…
When was CVE-2026-49132 disclosed?
CVE-2026-49132 was first published in the National Vulnerability Database on August 3, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-49132 actively exploited?
CVE-2026-49132 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 98.5% of all scored CVEs.
What is the CVSS score of CVE-2026-49132?
CVE-2026-49132 has a CVSS v4.0 base score of 5.4 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-49132?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-49132, 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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