CVE-2026-31803

HIGHPre-NVD 8.08.0
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 8.0 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (35th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
8.0EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 8.0Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Combodo iTop is a web based IT service management tool. Prior to 3.2.3, 3.2.3, there is a Reflected Cross-Site Scripting (XSS) vulnerability in pages/tagadmin.php. This issue has been fixed in version 3.2.3.

CVSS v3
8.0
EG Score
8.0HIGHmedium confidence
EG Risk
36
EG Risk 36/100

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)
Severity80% × 45%
The EG Score, 8.0 of 10.
Exploitation0.4% × 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 low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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
0.4%
EPSS %ILE
35th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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)14 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 total (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

August 21, 2026

Last Modified

October 12, 2026

Advisory Details (2)

Auto-updated Aug 21, 2026
Patch available. Sources: github, github_commit.
GitHub commit Patch Available

commit ab8e7bd15ed2 (Combodo/iTop)

Patch available: Combodo/iTop 3.2.3-1 (contains commit ab8e7bd15ed2)

https://github.com/Combodo/iTop/commit/ab8e7bd15ed251ad4fbe8d4d1b17474b2d688fba
GitHub advisoryMentions a patch (unverified)

Reflected XSS in tag admin · Advisory · Combodo/iTop · GitHub

https://github.com/Combodo/iTop/security/advisories/GHSA-m27p-8qgh-857g

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 47× 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.

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. 4 repeat rows among the latest 96 are merged into the row they repeat.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  3. 2026-10-12 16:14 UTCEG score recompute
  4. 2026-10-11 19:57 UTCEG score recompute
  5. 2026-10-11 17:10 UTCEG score recompute
  6. 2026-10-11 14:38 UTCEG score recompute
  7. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  10. 2026-10-09 05:43 UTCEG score recompute
  11. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  12. 2026-10-08 04:51 UTCEG score recompute
  13. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  14. 2026-10-06 16:49 UTCEG score recompute
  15. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  16. 2026-10-06 03:03 UTCEG score recompute
  17. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  18. 2026-10-05 09:25 UTCEG score recompute
  19. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  20. 2026-10-03 16:41 UTCEG score recompute
  21. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  22. 2026-10-02 22:02 UTCEG score recompute
  23. 2026-10-01 21:24 UTCEG score recompute
  24. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  25. 2026-09-30 20:25 UTCEG score recompute
Show 67 more
  1. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  2. 2026-09-30 07:48 UTCEG score recompute
  3. 2026-09-29 04:16 UTCEG score recompute
  4. 2026-09-27 14:44 UTCEG score recompute
  5. 2026-09-27 02:25 UTCEG score recompute
  6. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  7. 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  8. 2026-09-24 22:25 UTCEG score recompute
  9. 2026-09-23 20:20 UTCEG score recompute
  10. 2026-09-22 19:42 UTCEG score recompute
  11. 2026-09-22 06:52 UTCEG score recompute
  12. 2026-09-21 06:08 UTCEG score recompute
  13. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  14. 2026-09-19 17:10 UTCEG score recompute
  15. 2026-09-19 04:51 UTCEG score recompute
  16. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  17. 2026-09-18 04:05 UTCEG score recompute
  18. 2026-09-17 19:30 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  19. 2026-09-16 14:19 UTCEG score recompute
  20. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  21. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  22. 2026-09-15 13:40 UTCEG score recompute
  23. 2026-09-14 00:43 UTCEG score recompute
  24. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  25. 2026-09-13 00:05 UTCEG score recompute
  26. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  27. 2026-09-11 23:26 UTCEG score recompute
  28. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  29. 2026-09-11 11:01 UTCEG score recompute
  30. 2026-09-10 10:01 UTCEG score recompute
  31. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  32. 2026-09-09 01:44 UTCEG score recompute
  33. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  34. 2026-09-08 03:47 UTCEG score recompute
  35. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  36. 2026-09-07 01:05 UTCEG score recompute
  37. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  38. 2026-09-06 00:27 UTCEG score recompute
  39. 2026-09-04 23:48 UTCEG score recompute
  40. 2026-09-02 20:57 UTCEG score recompute
  41. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  42. 2026-09-01 18:50 UTCEG score recompute
  43. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  44. 2026-09-01 06:25 UTCEG score recompute
  45. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  46. 2026-08-31 04:35 UTCEG score recompute
  47. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  48. 2026-08-30 03:57 UTCEG score recompute
  49. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  50. 2026-08-29 03:16 UTCEG score recompute
  51. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  52. 2026-08-28 02:23 UTCEG score recompute
  53. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  54. 2026-08-27 01:42 UTCEG score recompute
  55. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  56. 2026-08-26 01:00 UTCEG score recompute
  57. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  58. 2026-08-25 00:22 UTCEG score recompute
  59. 2026-08-24 14:17 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  60. 2026-08-24 12:02 UTCEG score recompute
  61. 2026-08-23 11:23 UTCEG score recompute
  62. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  63. 2026-08-21 22:25 UTCEG score recompute
  64. 2026-08-21 21:51 UTCEG score recompute
  65. 2026-08-21 21:24 UTCEG score recompute
  66. 2026-08-21 20:55 UTCEG score recomputeFirst assessed: 8.0 HIGH
  67. 2026-08-21 20:54 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-31803?
CVE-2026-31803 is a high-severity vulnerability; its CVE record was published on August 21, 2026. Combodo iTop is a web based IT service management tool. Prior to 3.2.3, 3.2.3, there is a Reflected Cross-Site Scripting (XSS) vulnerability in pages/tagadmin.php. This issue has been fixed in version 3.2.3.
When was the CVE record for CVE-2026-31803 published?
The CVE record for CVE-2026-31803 was published on August 21, 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 October 12, 2026; the record at its source may have been updated since.
Is CVE-2026-31803 actively exploited?
CVE-2026-31803 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (35th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-31803?
CVE-2026-31803 has a CVSS base score of 8.0 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-31803?
A fix for CVE-2026-31803 is available: update to the fixed version the vendor names in its advisory.

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