CVE-2026-5090

MEDIUMNVD 6.16.1
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 6.1 from GitHub Security Advisory (severity: MODERATE) published 2026-05-20. NVD baseline CVSS 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3

Also known asEUVD-2026-30995 (ENISA EUVD) · GHSA-xhg9-j279-j625 (GitHub Security Advisories)Source: ENISA EUVD

6.1EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 6.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Fixed versions, as the CVE record's CNA (CPAN Security Group) states them: "Upgrade to version 3.103."

Template::Plugin::HTML versions before 3.103 for Perl allows HTML and JavaScript to be injected.

The html_filter function did not escape single quotes. HTML attributes inside of single quotes could be have code injected. For example, the variable "var" in

would not be properly escaped. An attacker could insert some limited HTML and JavaScript, for example,

var = " ' onclick='while (true) { alert(1) }'"

Note that arbitrary HTML and JavaScript would be difficult to inject, because angle brackets, ampersands and double-quotes would still be escaped.

CVSS v3
6.1
EG Score
6.1MEDIUMmedium confidence
EG Risk
28
EG Risk 28/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity61% × 45%
Impact severity (EG Severity): CVSS 6.1 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.3% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.3%
EPSS %ILE
22nd
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (6.1): severity, escalated by confirmed exploitation. This CVE's 6.1 is its impact severity (EG Severity), not escalated.

EG Severity
6.1 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.3% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-07). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track 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). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

May 19, 2026

Last Modified

September 19, 2026

Advisory Details (3)

Auto-updated Jun 15, 2026
Patch available. Sources: github_pr.
Web page

oss-security - CVE-2026-5090: Template::Plugin::HTML versions through 3.102 for Perl allows HTML and JavaScript to be injected

http://www.openwall.com/lists/oss-security/2026/05/19/40
GitHub pull request

fix: escape single quotes in HTML filter

Fix merged in abw/Template2 PR #337 on 2026-03-22 — awaiting tagged release

https://github.com/abw/Template2/pull/337/changes/11c78a7a771d4af505efeb754a0b8775689c2eae
Web page

html filter should escape single-quotes, too · Issue #327 · cpan-authors/Template2 · GitHub

https://github.com/abw/Template2/issues/327

Vendor Advisories for CVE-2026-5090(1)

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

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulibtemplate-perl (3.102-1ubuntu0.1) @ resolute2026-10-22ubuntu

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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
libtemplate-perl2.27-1, 3.102-1, 3.102-2, 3.102-3, 3.106-1
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
libtemplate-perl2.27-1, 3.102-1, 3.102-2, 3.102-3, 3.106-1
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
libtemplate-perl2.27-1, 3.102-1, 3.102-2, 3.102-3, 3.106-1
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
libtemplate-perl2.27-1, 3.102-1, 3.102-2
  • every version up to 3.102-3: fixed in 3.102-3
—

Weakness Classification(1)

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

All Vendor Advisories

(1)

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 / 33× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed its CVE.org record (CNA or CISA ADP). An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 300 rows on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 200 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-13 16:53 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  2. 2026-11-12 16:34 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  3. 2026-11-11 16:40 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  4. 2026-11-10 16:45 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  5. 2026-11-09 16:35 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  6. 2026-11-08 16:40 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  7. 2026-11-07 19:29 UTCGHSA enrichmentGHSA-xhg9-j279-j625 · GitHub severity MODERATE · GitHub CVSS 6.1
  8. 2026-11-07 19:29 UTCEchelonGraph re-scored
  9. 2026-11-07 16:39 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  10. 2026-11-06 16:38 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  11. 2026-11-05 16:38 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  12. 2026-11-04 16:36 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  13. 2026-11-03 16:48 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  14. 2026-11-02 16:45 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  15. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  16. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  17. 2026-10-30 12:55 UTCOSV refresh
  18. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  19. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  20. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  21. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  22. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  23. 2026-10-25 14:21 UTCEchelonGraph re-scored
  24. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  25. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.3% · 26th percentile
Show 75 more
  1. 2026-10-22 22:54 UTCEchelonGraph re-scored
  2. 2026-10-22 22:54 UTCVendor advisory
  3. 2026-10-22 22:54 UTCGHSA enrichmentGHSA-xhg9-j279-j625 · GitHub CVSS 6.1
  4. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  5. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  6. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  7. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  8. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  9. 2026-10-18 03:33 UTCEchelonGraph re-scored
  10. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  11. 2026-10-16 16:43 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  12. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  13. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  14. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  15. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  16. 2026-10-12 15:59 UTCEchelonGraph re-scored
  17. 2026-10-11 19:42 UTCEchelonGraph re-scored
  18. 2026-10-11 16:56 UTCEchelonGraph re-scored
  19. 2026-10-11 14:20 UTCEchelonGraph re-scored
  20. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  21. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  22. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  23. 2026-10-09 05:25 UTCOSV refresh
  24. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  25. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  26. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  27. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  28. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  29. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  30. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  31. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  32. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  33. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  34. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  35. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  36. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  37. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  38. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  39. 2026-09-19 12:27 UTCVendor advisory
  40. 2026-09-19 12:27 UTCGHSA enrichmentGHSA-xhg9-j279-j625 · GitHub CVSS 6.1
  41. 2026-09-19 11:56 UTCEchelonGraph re-scored
  42. 2026-09-19 11:56 UTCVendor advisory
  43. 2026-09-19 11:56 UTCGHSA enrichmentGHSA-xhg9-j279-j625 · GitHub CVSS 6.1
  44. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  45. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  46. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  47. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  48. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  49. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  50. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  51. 2026-09-11 05:23 UTCOSV refresh
  52. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  53. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  54. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  55. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  56. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  57. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  58. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  59. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  60. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  61. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  62. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  63. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  64. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  65. 2026-08-23 16:59 UTCEchelonGraph re-scored
  66. 2026-08-23 16:59 UTCVendor advisory
  67. 2026-08-23 16:59 UTCGHSA enrichmentGHSA-xhg9-j279-j625 · GitHub CVSS 6.1
  68. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  69. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  70. 2026-08-21 23:35 UTCEchelonGraph re-scored
  71. 2026-08-21 23:35 UTCVendor advisory
  72. 2026-08-21 23:35 UTCGHSA enrichmentGHSA-xhg9-j279-j625 · GitHub CVSS 6.1
  73. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  74. 2026-08-20 18:58 UTCEchelonGraph re-scored
  75. 2026-08-20 18:58 UTCVendor advisory

Frequently asked(5)

What is CVE-2026-5090?
CVE-2026-5090 is a medium-severity vulnerability; its CVE record was published on May 19, 2026. Template::Plugin::HTML versions before 3.103 for Perl allows HTML and JavaScript to be injected. The html_filter function did not escape single quotes. HTML attributes inside of single quotes could be have code injected. For example, the variable "var" in <a id='ref' title='[% var | html %]'> would…
When was the CVE record for CVE-2026-5090 published?
The CVE record for CVE-2026-5090 was published on May 19, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 19, 2026; the record at its source may have been updated since.
Is CVE-2026-5090 actively exploited?
CVE-2026-5090 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (22nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-5090?
CVE-2026-5090 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2026-5090?
A fix for CVE-2026-5090 is available: update to the fixed version the vendor names in its advisory. Fixed versions, as the CVE record's CNA (CPAN Security Group) states them: "Upgrade to version 3.103." The vendor advisories EchelonGraph has for CVE-2026-5090 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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