CVE-2026-0279

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: LOW) published 2026-07-09. NVD baseline CVSS 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
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: 0.8%CVSS: 6.1Exploit: None knownExposed services: Not assessed

Upgrade to 11.1.16 or later.PAN-OS 10.210.2.0 through 10.2*Upgrade to 11.1.16, 11.2.13, 12.1.8 or later.All older unsupported (from the CVE record's solution, Palo Alto Networks, Inc.) — apply it.

Multiple cross site scripting vulnerabilities in the User-ID™ Authentication Portal (aka Captive Portal) service, GlobalProtect™ gateway/portal features and Clientless VPN of Palo Alto Networks PAN-OS® software enables a malicious unauthenticated user to store or execute malicious JavaScript payload.

The security risk posed by this issue is minimized when the management interface and access to the User-ID™ Authentication Portal is restricted to only trusted internal IP addresses according to our recommended best practice deployment guidelines https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431 .

This issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series).

Cloud NGFW is not affected by this vulnerability.

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 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 (value × EchelonGraph’s weight)
Severity61% × 45%
The EG Score, 6.1 of 10.
Exploitation0.8% × 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: Upgrade to 11.1.16 or later.PAN-OS 10.210.2.0 through 10.2*Upgrade to 11.1.16, 11.2.13, 12.1.8 or later.All older unsupported (from the CVE record's solution, Palo Alto Networks, Inc.). Apply it within your standard update timelines.
EPSS PROB
0.8%
EPSS %ILE
53rd
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

Upgrade to 11.1.16 or later.PAN-OS 10.210.2.0 through 10.2*Upgrade to 11.1.16, 11.2.13, 12.1.8 or later.All older unsupported (from the CVE record's solution, Palo Alto Networks, Inc.). 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.

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

July 9, 2026

Last Modified

August 11, 2026

Advisory Details (1)

Auto-updated Jul 13, 2026
Fix named in the CVE record's solution (Palo Alto Networks, Inc.).
Web page

CVE-2026-0279 PAN-OS: Multiple Cross-Site Scripting (XSS) Vulnerabilities

https://security.paloaltonetworks.com/CVE-2026-0279

Vendor Advisories for CVE-2026-0279(2)

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 11× in last 7d / 34× 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 it from the CNA feed. 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). Most recent first.

Showing the most recent 100 of 170 refreshes 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 70 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  2. 2026-10-12 16:42 UTCEG score recompute
  3. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  4. 2026-10-11 20:17 UTCEG score recompute
  5. 2026-10-11 18:29 UTCEG score recompute
  6. 2026-10-11 15:03 UTCEG score recompute
  7. 2026-10-11 13:47 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  8. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  9. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  10. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  11. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  12. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  13. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  14. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  15. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  16. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  17. 2026-10-01 16:01 UTCEG score recompute
  18. 2026-10-01 16:01 UTCGHSA enrichmentGHSA-6cj9-cg4w-4m7x · GitHub severity LOW · GitHub CVSS 6.1
  19. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  20. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  21. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  22. 2026-09-28 10:27 UTCEG score recompute
  23. 2026-09-28 10:27 UTCGHSA enrichmentGHSA-6cj9-cg4w-4m7x · GitHub severity LOW · GitHub CVSS 6.1
  24. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  25. 2026-09-24 11:24 UTCEG score recompute
Show 75 more
  1. 2026-09-24 11:24 UTCGHSA enrichmentGHSA-6cj9-cg4w-4m7x · GitHub severity LOW · GitHub CVSS 6.1
  2. 2026-09-23 13:47 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  3. 2026-09-23 05:53 UTCEG score recompute
  4. 2026-09-23 05:53 UTCGHSA enrichmentGHSA-6cj9-cg4w-4m7x · GitHub severity LOW · GitHub CVSS 6.1
  5. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  6. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  7. 2026-09-18 05:35 UTCEG score recompute
  8. 2026-09-18 05:35 UTCGHSA enrichmentGHSA-6cj9-cg4w-4m7x · GitHub severity LOW · GitHub CVSS 6.1
  9. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  10. 2026-09-14 11:11 UTCEG score recompute
  11. 2026-09-14 11:11 UTCGHSA enrichmentGHSA-6cj9-cg4w-4m7x · GitHub severity LOW · GitHub CVSS 6.1
  12. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  13. 2026-09-13 08:18 UTCEG score recompute
  14. 2026-09-13 08:18 UTCGHSA enrichmentGHSA-6cj9-cg4w-4m7x · GitHub severity LOW · GitHub CVSS 6.1
  15. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  16. 2026-09-12 03:22 UTCEG score recompute
  17. 2026-09-12 03:22 UTCGHSA enrichmentGHSA-6cj9-cg4w-4m7x · GitHub severity LOW · GitHub CVSS 6.1
  18. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  19. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  20. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  21. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  22. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  23. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  24. 2026-09-05 22:32 UTCEG score recompute
  25. 2026-09-05 22:32 UTCGHSA enrichmentGHSA-6cj9-cg4w-4m7x · GitHub severity LOW · GitHub CVSS 6.1
  26. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  27. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  28. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  29. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  30. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  31. 2026-08-30 06:44 UTCEG score recompute
  32. 2026-08-30 06:44 UTCGHSA enrichmentGHSA-6cj9-cg4w-4m7x · GitHub severity LOW · GitHub CVSS 6.1
  33. 2026-08-30 01:21 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  34. 2026-08-28 21:40 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  35. 2026-08-28 02:43 UTCEG score recompute
  36. 2026-08-28 02:43 UTCGHSA enrichmentGHSA-6cj9-cg4w-4m7x · GitHub severity LOW · GitHub CVSS 6.1
  37. 2026-08-27 14:24 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  38. 2026-08-27 00:57 UTCEG score recompute
  39. 2026-08-27 00:57 UTCGHSA enrichmentGHSA-6cj9-cg4w-4m7x · GitHub severity LOW · GitHub CVSS 6.1
  40. 2026-08-25 15:54 UTCEG score recompute
  41. 2026-08-25 15:54 UTCGHSA enrichmentGHSA-6cj9-cg4w-4m7x · GitHub severity LOW · GitHub CVSS 6.1
  42. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  43. 2026-08-24 13:44 UTCEG score recompute
  44. 2026-08-24 13:44 UTCGHSA enrichmentGHSA-6cj9-cg4w-4m7x · GitHub severity LOW · GitHub CVSS 6.1
  45. 2026-08-23 11:56 UTCEG score recompute
  46. 2026-08-23 11:56 UTCGHSA enrichmentGHSA-6cj9-cg4w-4m7x · GitHub severity LOW · GitHub CVSS 6.1
  47. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  48. 2026-08-22 10:09 UTCEG score recompute
  49. 2026-08-22 10:09 UTCGHSA enrichmentGHSA-6cj9-cg4w-4m7x · GitHub severity LOW · GitHub CVSS 6.1
  50. 2026-08-21 23:48 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  51. 2026-08-21 08:17 UTCEG score recompute
  52. 2026-08-21 08:17 UTCGHSA enrichmentGHSA-6cj9-cg4w-4m7x · GitHub severity LOW · GitHub CVSS 6.1
  53. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  54. 2026-08-20 06:30 UTCEG score recompute
  55. 2026-08-20 06:30 UTCGHSA enrichmentGHSA-6cj9-cg4w-4m7x · GitHub severity LOW · GitHub CVSS 6.1
  56. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  57. 2026-08-19 04:43 UTCEG score recompute
  58. 2026-08-19 04:43 UTCGHSA enrichmentGHSA-6cj9-cg4w-4m7x · GitHub severity LOW · GitHub CVSS 6.1
  59. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  60. 2026-08-18 02:54 UTCEG score recompute
  61. 2026-08-18 02:54 UTCGHSA enrichmentGHSA-6cj9-cg4w-4m7x · GitHub severity LOW · GitHub CVSS 6.1
  62. 2026-08-16 22:28 UTCEG score recompute
  63. 2026-08-16 22:28 UTCGHSA enrichmentGHSA-6cj9-cg4w-4m7x · GitHub severity LOW · GitHub CVSS 6.1
  64. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  65. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  66. 2026-08-15 20:41 UTCEG score recompute
  67. 2026-08-15 20:41 UTCGHSA enrichmentGHSA-6cj9-cg4w-4m7x · GitHub severity LOW · GitHub CVSS 6.1
  68. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  69. 2026-08-14 18:54 UTCEG score recompute
  70. 2026-08-14 18:54 UTCGHSA enrichmentGHSA-6cj9-cg4w-4m7x · GitHub severity LOW · GitHub CVSS 6.1
  71. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  72. 2026-08-13 17:07 UTCGHSA enrichmentGHSA-6cj9-cg4w-4m7x · GitHub severity LOW · GitHub CVSS 6.1
  73. 2026-08-12 15:11 UTCEG score recompute
  74. 2026-08-12 15:11 UTCGHSA enrichmentGHSA-6cj9-cg4w-4m7x · GitHub severity LOW · GitHub CVSS 6.1
  75. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.3% · 26th percentile

Frequently asked(5)

What is CVE-2026-0279?
CVE-2026-0279 is a medium-severity vulnerability; its CVE record was published on July 9, 2026. Multiple cross site scripting vulnerabilities in the User-ID™ Authentication Portal (aka Captive Portal) service, GlobalProtect™ gateway/portal features and Clientless VPN of Palo Alto Networks PAN-OS® software enables a malicious unauthenticated user to store or execute malicious JavaScript…
When was CVE-2026-0279 made public?
CVE-2026-0279 was made public on July 8, 2026: that is the date its CVE record's CNA, Palo Alto Networks, Inc., gives for when the vulnerability was made public. The CVE record itself was published on July 9, 2026. EchelonGraph's copy of the record carries a last-modified date of August 11, 2026; the record at its source may have been updated since.
Is CVE-2026-0279 actively exploited?
CVE-2026-0279 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% probability of exploitation in the next 30 days (53rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-0279?
CVE-2026-0279 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2026-0279?
The CVE record's solution for CVE-2026-0279, written by its CNA Palo Alto Networks, Inc., names the fix: "Upgrade to 11.1.16 or later.PAN-OS 10.210.2.0 through 10.2*Upgrade to 11.1.16, 11.2.13, 12.1.8 or later.All older unsupported". The vendor advisories EchelonGraph has for CVE-2026-0279 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-0279

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