CVE-2026-27136

MEDIUMNVD 6.16.1—
EchelonGraph scoreMEDIUM confidence

Score 6.1 from GitHub Security Advisory published 2026-05-26. NVD baseline CVSS 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
6.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.1Exploit: None knownExposed: 0

A fix is available — apply it.

Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree. This can be leveraged to execute XSS attacks in applications that attempt to sanitize input HTML before rendering.

CVSS v3
6.1
EG Score
6.1(medium)
EG Risk
28(Track)
EG Risk 28/100SSVC: 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
Severity61% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

May 26, 2026

Last Modified

July 23, 2026

Advisory Details (4)

Auto-updated Jun 15, 2026
No patch confirmed yet.
generic

GO-2026-5030 - Go Packages

https://pkg.go.dev/vuln/GO-2026-5030
generic
https://groups.google.com/g/golang-announce/c/iI-mYSI0lu8
generic

x/net/html: duplicate attributes can cause XSS · Issue #79575 · golang/go · GitHub

https://go.dev/issue/79575
generic
https://go.dev/cl/781685

Vendor Advisories for CVE-2026-27136(20)

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

Patch Availability(30)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatmulticluster-engine/hypershift-addon-rhel9-operator:17869120062026-08-19redhat
redhatodf4/rook-ceph-rhel9-operator:17866295482026-08-19redhat
redhatrhacm2/rbac-query-proxy-rhel9:17869091362026-08-19redhat
redhatopenshift-logging/cluster-logging-rhel9-operator:17866583782026-08-18redhat
redhatodf4/rook-ceph-rhel9-operator:17867031432026-08-18redhat
redhatopenshift4/ose-insights-rhel9-operator:17865866632026-08-18redhat
redhatmta/mta-platform-addon-rhel9:17864814892026-08-18redhat
redhatcert-manager/jetstack-cert-manager-rhel9:17866138052026-08-13redhat
redhatcert-manager/cert-manager-istio-csr-rhel9:17866153352026-08-13redhat
redhatworkload-availability/machine-deletion-remediation-rhel9-operator:17852035082026-08-12redhat
redhatworkload-availability/node-maintenance-rhel9-operator:17852028472026-08-12redhat
redhatworkload-availability/storage-based-remediation-rhel9-operator:17852034742026-08-12redhat
redhatworkload-availability/fence-agents-remediation-rhel9-operator:17852030792026-08-12redhat
redhatworkload-availability/self-node-remediation-rhel9-operator:17852030362026-08-12redhat
redhatworkload-availability/node-healthcheck-rhel9-operator:17852027232026-08-12redhat
redhatcompliance/openshift-file-integrity-rhel8-operator:17864394492026-08-12redhat
redhatrh-lightspeed-runtimes/runtimes-inventory-rhel9-operator:17864837822026-08-12redhat
redhatopentelemetry-collector-0:0.152.1-1.el9_62026-08-11redhat
redhatopentelemetry-collector-0:0.152.1-1.el9_42026-08-11redhat
redhatopenshift4/ose-ibmcloud-machine-controllers-rhel9:17858843252026-08-11redhat
redhatopentelemetry-collector-0:0.152.1-1.el10_02026-08-11redhat
redhatopenshift-gitops-1/dex-rhel9:17852111822026-08-10redhat
redhatopenshift-gitops-1/dex-rhel8:17851485672026-08-10redhat
redhatoadp/oadp-velero-rhel9:17851808782026-08-06redhat
redhatsatellite/iop-vmaas-rhel9:17859233082026-08-06redhat
redhatgrafana-0:10.2.6-22.el9_62026-08-06redhat
redhatrhtas/rhtas-rhel9-operator:17854093082026-08-05redhat
redhatopenshift-logging/cluster-logging-rhel9-operator:17854188712026-08-05redhat
redhatmta/mta-cli-rhel9:17851716392026-08-04redhat
redhatmulticluster-engine/hypershift-addon-rhel9-operator:17847387582026-07-29redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
golang-golang-x-net1:0.0+git20210119.5f4716e+dfsg-4 ... 1:0.7.0+dfsg-1 (40 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
golang-golang-x-net1:0.10.0-1 ... 1:0.7.0+dfsg-1 (27 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
golang-golang-x-net1:0.27.0-2 ... 1:0.58.0-1 (10 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
golang-golang-x-net1:0.27.0-2 ... 1:0.53.0-2~bpo13+1 (6 versions)1:0.55.0-1—
Go(1)
PackageVulnerable rangeFixed inDependents
golang.org/x/net—0.55.0—

Weakness Classification(1)

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

All Vendor Advisories

(25)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 7× in last 7d / 35× 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 258 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-27136?
CVE-2026-27136 is a medium vulnerability published on May 26, 2026. Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree. This can be leveraged to execute XSS attacks in applications that attempt to sanitize input HTML before rendering.
When was CVE-2026-27136 disclosed?
CVE-2026-27136 was first published in the National Vulnerability Database on May 26, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-27136 actively exploited?
CVE-2026-27136 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 86.8% of all scored CVEs.
What is the CVSS score of CVE-2026-27136?
CVE-2026-27136 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2026-27136?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-27136, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-27136

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