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
Trending — 4 sources updated this week
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 (26 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
golang-golang-x-net1:0.27.0-2 ... 1:0.57.0-1 (9 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 8× in last 7d / 77× 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 240 total refreshes for this CVE.

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

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 87.2% 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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