vciy

CVE-2025-26493

INDEX BUILT · 2026-09-20

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In JetBrains TeamCity before 2024.12.2 several DOM-based XSS were possible on the Code Inspection Report tab

CVE-2025-264934 of 4 sources documented this
19

rank 19 = 0 + 15 + 2 + 2 + 0

rank@v1 · backlog

Someone is already using it

CISA KEV catalog · public proof-of-concept · FIRST EPSS

EPSS 0.00378  ·  without this subject the record ranks 19

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 6.1, from NVD  ·  without this subject the record ranks 4

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

rose on 2025-12-08  ·  without this subject the record ranks 17

How much of the world it touches

NVD CPE configurations

1 product in the CPE ranges  ·  without this subject the record ranks 17

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 19

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$8,070over the next 30 days, if this record is yours
Movement+$247,000on 2025-10-28, the last material move, 10 months before this reading
Basisassumeda published average, not your estate

$8,070 = $4.99M incident cost x 0.42806422275080447 exposure x 0.00378 likelihood

udv@v1 · unaudited · wrong for you until you say what you run

$4.99M is the cost of a breach that happened, from IBM Cost of a Data Breach Report 2026, global average. It is not the value of any asset of yours. That average already covers breaches of every severity, so scaling it by exposure understates a partial-impact record. That is an assumption, not a measurement. Your own asset value goes in the decision record.

Hindsight · the state

0.00378EPSSNOT IN KEVas of 2026-09-20
Severity4.6 MEDIUMreceipt
Harmpartial impactreceipt
Exploitationnone in held sources
Defensefix version namedreceipt
Movementdoubled within 72hreceipt
PLATEAU10Minimal movement since 2026-06-15, 83 days at 0.00, as of 2026-09-06. arc-rules@v1

Foresight · where to check next

CVE-2021-26829CVE-2018-6882CVE-2024-27443CVE-2024-37383CVE-2023-37580CVE-2023-4377026493

This record is one instance of CWE-79, improper neutralization of input during web page generation ('cross-site scripting'). The index holds 47894 prior instances of this class, 32 KEV-listed. The nearest of its KEV-listed records are drawn beside this. taxonomy@v1

Full pattern panel

Prior records in this weakness class. Each is its own record, dated and receipted.
Color is a claim, not decoration:the hostile worldthe defenseno signalspoke length is how much of the record matches, not how bad it is

Sources disagree here.

Severity score
JetBrains4.6 MEDIUMreceipt
NVD6.1 MEDIUMreceipt
What it costs
JetBrainsPartial confidentiality and integrity lossreceipt
NVDPartial confidentiality and integrity loss, with impact beyond the vulnerable componentreceipt

Both shown, dated. We don't pick winners. disagreement-rules@v1

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Harm, if it fires from the vector and the weakness

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Reachnetwork-reachable · low privileges required · user interaction required · low attack complexityreceipt
ImpactPartial confidentiality and integrity lossreceipt
Scored fromCVSS v3.1 · the CNA's vectorreceipt
Weakness classCWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')receipt
Published consequencesCWE-79: Access Control, Confidentiality: Bypass Protection Mechanism, Read Application Data; Integrity, Confidentiality, Availability: Execute Unauthorized Code or Commands…[email protected]

CISA KEV & Federal Remediation Deadline from the record and CISA

The fix, and how long it's been waiting.

Fixed in2024.12.2receipt
Patch available sinceNo dated patch-availability record in held sources. The index holds reference URLs without dates and only the current revision of the CVE record, so the day a fix first existed cannot be derived. Only the versions it landed in.

Exploit Status & Known PoCs a ladder, not a score

Current rung: Nothing observed in held sources.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published
  • RUNG 3Exploited in the wild · CISA KEV listed
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, the CNA4.6 MEDIUMreceipt
CVSS, NVD6.1 MEDIUMreceipt
Exploit probability0.00378 · top 68% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned byJetBrainsreceipt
Recorded changes35 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productJetBrains TeamCityreceipt
Published rangesjetbrains teamcity < 2024.12.2receipt
Fixed in2024.12.2receipt

A rung lights from a row in the index, never from an assessment. "Held sources" is the true scope of the claim: this index reads the CVE record, NVD, CISA KEV, FIRST's EPSS and public proof-of-concept repositories, and it does not observe attacks.

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What it is stated by the CNA

In JetBrains TeamCity before 2024.12.2 several DOM-based XSS were possible on the Code Inspection Report tab receipt

NVD's analysis a second authority

severity
6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
weakness
CWE-79
affected versions
jetbrains teamcity < 2024.12.2
also scored by
[email protected] 4.6 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

The CNA scored it 4.6 and NVD 6.1. Both are shown because both were published; we do not pick one.

check it yourself jetbrains.com receipt

Dated events

2025-10-17EPSS moved 0.10 to 0.132026-01-25EPSS moved 0.46 to 0.112026-06-15EPSS moved 0.16 to 0.00

Movement the material steps

12 Feb 20250.00043
17 Mar 20250.0001 · scoring model v2025.03.14
17 Oct 20250.12682 · crossed 0.10
27 Oct 20250.06462 · crossed 0.10
28 Oct 20250.1803 · crossed 0.10
17 Nov 20250.31746
18 Nov 20250.48939
21 Nov 20250.31746
8 Dec 20250.4585
27 Dec 20250.29983
28 Dec 20250.4585
25 Jan 20260.11442
15 Jun 20260.0034 · crossed 0.10 · scoring model v2026.06.15
6 Sep 20260.00378

This score more than doubled inside 72 hours. Both observations are in the full history below.

Show all 35 observations
12 Feb 20250.00043
17 Mar 20250.0001
29 Mar 20256e-05
30 Mar 20250.0001
17 May 20250.00181
26 May 20250.00304
13 Jun 20250.03816
10 Jul 20250.0173
11 Jul 20250.01921
22 Jul 20250.02817
29 Aug 20250.03778
7 Sep 20250.04041
17 Sep 20250.05989
1 Oct 20250.09959
17 Oct 20250.12682
27 Oct 20250.06462
28 Oct 20250.1803
7 Nov 20250.19581
17 Nov 20250.31746
18 Nov 20250.48939
21 Nov 20250.31746
28 Nov 20250.33354
8 Dec 20250.4585
27 Dec 20250.29983
28 Dec 20250.4585
25 Jan 20260.11442
17 Feb 20260.10025
22 Mar 20260.14191
24 Mar 20260.1791
26 Mar 20260.15671
15 Jun 20260.0034
17 Jun 20260.00349
10 Jul 20260.00364
14 Aug 20260.0037
6 Sep 20260.00378

35 observations held. A highlighted step crossed a promotion threshold. A step marked with a scoring model moved because the instrument was replaced, not because the vulnerability changed. receipt

The full biography

EPSS 0.00378Published2025-02-11Index as of2026-09-06

Exploit probability more than doubled between 2025-10-27 and 2025-10-28 (0.06462 → 0.1803) and the record had been public for 1 year, 6 months when this index was last written.

Published 2025-02-11 receipt · Index as of 2026-09-06 derived

The pattern, elsewhere

This record is one instance of CWE-79, improper neutralization of input during web page generation ('cross-site scripting'). The index holds 47894 prior instances of this class, 32 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2021-26829matches 7 of 8KEV listed · 2021receipt
CVE-2018-6882matches 6 of 8KEV listed · 2018receipt
CVE-2024-27443matches 6 of 8KEV listed · 2024receipt
CVE-2024-37383matches 6 of 8KEV listed · 2024receipt
CVE-2023-37580matches 6 of 8KEV listed · 2023receipt
CVE-2023-43770matches 6 of 8KEV listed · 2023receipt

"Matches n of m" counts the attributes the two records can both be compared on: the CVSS metrics they share a version of, any weakness class beyond this one, and the vendor. fit-rules@v1

47894 records in this class held. The six above are drawn from the ones CISA has listed as exploited, ranked by how much of the record matches this one. That is why every one of them is KEV-listed: the pool is, so the colour on those spokes says nothing the pool has not already said.

No curated product neighbourhood is held for this product, so the records above are the nearest this index can name. The neighbourhood table covers a small set of products and is extended by hand.

Siblings and hubs

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What usually comes next

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