CVE-2026-49132

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreMEDIUM confidence

Score 5.4 from GitHub Security Advisory published 2026-08-03. A secondary CVSS source baseline 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
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: 0.2%CVSS: 5.4Exploit: None knownExposed services: Not assessed

An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.

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
5.4MEDIUMmedium 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: An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.
EPSS PROB
0.2%
EPSS %ILE
7th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.

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 3, 2026

Last Modified

September 16, 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 13× in last 7d / 60× 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 142 total refreshes for this CVE.

  1. 2026-10-04 23:22 UTCEPSS rescore
  2. 2026-10-04 06:17 UTCEG score recompute
  3. 2026-10-04 06:17 UTCGHSA enrichment
  4. 2026-10-03 14:25 UTCEPSS rescore
  5. 2026-10-02 10:17 UTCEG score recompute
  6. 2026-10-02 10:17 UTCGHSA enrichment
  7. 2026-10-01 19:50 UTCEPSS rescore
  8. 2026-10-01 02:32 UTCEG score recompute
  9. 2026-10-01 02:32 UTCGHSA enrichment
  10. 2026-09-30 15:03 UTCEPSS rescore
  11. 2026-09-29 06:36 UTCEG score recompute
  12. 2026-09-29 06:36 UTCGHSA enrichment
  13. 2026-09-28 13:51 UTCEPSS rescore
  14. 2026-09-27 18:14 UTCEG score recompute
  15. 2026-09-27 18:14 UTCGHSA enrichment
  16. 2026-09-27 13:48 UTCEPSS rescore
  17. 2026-09-26 15:59 UTCEPSS rescore
  18. 2026-09-26 00:27 UTCEPSS rescore
  19. 2026-09-25 04:45 UTCEG score recompute
  20. 2026-09-25 04:45 UTCGHSA enrichment
  21. 2026-09-23 23:47 UTCGHSA enrichment
  22. 2026-09-23 01:42 UTCEG score recompute
  23. 2026-09-23 01:42 UTCGHSA enrichment
  24. 2026-09-22 03:52 UTCEG score recompute
  25. 2026-09-22 03:52 UTCGHSA enrichment
Show 75 more
  1. 2026-09-20 21:17 UTCEG score recompute
  2. 2026-09-20 21:17 UTCGHSA enrichment
  3. 2026-09-20 20:16 UTCEPSS rescore
  4. 2026-09-19 23:26 UTCEG score recompute
  5. 2026-09-19 23:26 UTCGHSA enrichment
  6. 2026-09-18 23:00 UTCGHSA enrichment
  7. 2026-09-18 01:10 UTCEG score recompute
  8. 2026-09-18 01:10 UTCGHSA enrichment
  9. 2026-09-16 21:11 UTCEG score recompute
  10. 2026-09-16 21:11 UTCGHSA enrichment
  11. 2026-09-16 14:08 UTCEPSS rescore
  12. 2026-09-16 05:18 UTCEG score recompute
  13. 2026-09-16 05:18 UTCGHSA enrichment
  14. 2026-09-16 05:15 UTCEPSS rescore
  15. 2026-09-15 01:48 UTCGHSA enrichment
  16. 2026-09-13 20:09 UTCEG score recompute
  17. 2026-09-13 20:09 UTCGHSA enrichment
  18. 2026-09-13 16:47 UTCEPSS rescore
  19. 2026-09-12 22:18 UTCEG score recompute
  20. 2026-09-12 22:18 UTCGHSA enrichment
  21. 2026-09-12 00:25 UTCEG score recompute
  22. 2026-09-12 00:25 UTCGHSA enrichment
  23. 2026-09-11 14:53 UTCEPSS rescore
  24. 2026-09-11 02:24 UTCEG score recompute
  25. 2026-09-11 02:24 UTCGHSA enrichment
  26. 2026-09-10 09:35 UTCEPSS rescore
  27. 2026-09-10 04:33 UTCGHSA enrichment
  28. 2026-09-09 06:42 UTCEG score recompute
  29. 2026-09-09 06:42 UTCGHSA enrichment
  30. 2026-09-08 22:01 UTCEPSS rescore
  31. 2026-09-07 18:46 UTCEG score recompute
  32. 2026-09-07 18:46 UTCGHSA enrichment
  33. 2026-09-06 13:47 UTCEPSS rescore
  34. 2026-09-06 05:57 UTCEG score recompute
  35. 2026-09-06 05:57 UTCGHSA enrichment
  36. 2026-09-05 08:06 UTCEG score recompute
  37. 2026-09-05 08:06 UTCGHSA enrichment
  38. 2026-09-04 10:16 UTCGHSA enrichment
  39. 2026-09-03 08:32 UTCEG score recompute
  40. 2026-09-03 08:31 UTCGHSA enrichment
  41. 2026-09-01 22:14 UTCEG score recompute
  42. 2026-09-01 22:14 UTCGHSA enrichment
  43. 2026-09-01 13:54 UTCEPSS rescore
  44. 2026-09-01 04:40 UTCEPSS rescore
  45. 2026-08-31 23:09 UTCGHSA enrichment
  46. 2026-08-30 19:47 UTCEG score recompute
  47. 2026-08-30 19:47 UTCGHSA enrichment
  48. 2026-08-30 19:17 UTCEPSS rescore
  49. 2026-08-29 21:56 UTCEG score recompute
  50. 2026-08-29 21:56 UTCGHSA enrichment
  51. 2026-08-28 21:41 UTCEPSS rescore
  52. 2026-08-27 14:25 UTCEPSS rescore
  53. 2026-08-27 11:20 UTCEG score recompute
  54. 2026-08-27 11:20 UTCGHSA enrichment
  55. 2026-08-26 14:46 UTCEPSS rescore
  56. 2026-08-26 13:30 UTCGHSA enrichment
  57. 2026-08-25 15:35 UTCEG score recompute
  58. 2026-08-25 15:35 UTCGHSA enrichment
  59. 2026-08-25 13:49 UTCEPSS rescore
  60. 2026-08-24 17:44 UTCEG score recompute
  61. 2026-08-24 17:44 UTCGHSA enrichment
  62. 2026-08-23 19:44 UTCEG score recompute
  63. 2026-08-23 19:44 UTCGHSA enrichment
  64. 2026-08-23 00:19 UTCEPSS rescore
  65. 2026-08-22 21:54 UTCGHSA enrichment
  66. 2026-08-22 00:03 UTCGHSA enrichment
  67. 2026-08-21 02:13 UTCEG score recompute
  68. 2026-08-21 02:13 UTCGHSA enrichment
  69. 2026-08-20 22:55 UTCEPSS rescore
  70. 2026-08-20 04:23 UTCEG score recompute
  71. 2026-08-20 04:23 UTCGHSA enrichment
  72. 2026-08-19 17:04 UTCEPSS rescore
  73. 2026-08-19 06:32 UTCGHSA enrichment
  74. 2026-08-18 08:40 UTCEG score recompute
  75. 2026-08-18 08:40 UTCGHSA enrichment

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 on August 3, 2026, with the most recent update on September 16, 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 0.2% probability of exploitation in the next 30 days (7th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-49132?
CVE-2026-49132 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-2026-49132?
An upstream fix for CVE-2026-49132 has been merged but is not yet in a tagged release. Until it ships, restrict network exposure of the affected system or apply the vendor's mitigation, then update to the release that contains the fix. The vendor advisories EchelonGraph has for CVE-2026-49132 are linked in the Vendor Advisories panel on this page.

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