vciy

CVE-2026-32870

INDEX BUILT · 2026-09-20

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Kirby has XML injection in its XML creator toolkit

CVE-2026-328704 of 4 sources documented this
23

rank 23 = 0 + 19 + 0 + 4 + 0

rank@v1 · backlog

Someone is already using it

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

EPSS 0.00346  ·  without this subject the record ranks 23

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 7.5, from NVD  ·  without this subject the record ranks 4

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

no persisting rise in 365 days  ·  without this subject the record ranks 23

How much of the world it touches

NVD CPE configurations

2 products in the CPE ranges  ·  without this subject the record ranks 19

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 23

Unaudited dollar value2 of 3 inputs carry a receipt
Exposureunder $1over the next 30 days, if this record is yours
Movementno material movementthe record holds only daily drift and scoring model releases
Basisassumeda published average, not your estate

under $1 = $4.99M incident cost x 0 exposure x 0.00346 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

0.00346EPSSNOT IN KEVas of 2026-09-20
Severity6.9 MEDIUMreceipt
Harmunauthenticated · networkreceipt
Exploitationnone in held sources
Defenseunaffected versions publishedreceipt
Movementrisenreceipt
PLATEAU10Minimal movement since 2026-04-24, 60 days at 0.00, as of 2026-06-23. arc-rules@v1

Foresight · where to check next

No weakness class or product neighbourhood is held for this record, so this index cannot name anywhere to check next. That is an absence in the record, not a finding about the software.

Color is a claim, not decoration:the hostile worldthe defenseno signal

Sources disagree here.

Severity score
GitHub_M6.9 MEDIUMreceipt
NVD7.5 HIGHreceipt
Scoring standard
GitHub_MCVSS v4.0receipt
NVDCVSS v3.1receipt

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

Running getkirby kirby? Check your version

A deterministic range check against the ranges this record publishes. It tells you where a version sits in the record, not whether your deployment is exploitable. No account needed.

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Harm, if it fires from the vector and the weakness

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Reachnetwork-reachable · no privileges required · no user interaction · low attack complexity · attack requirements presentreceipt
ImpactNo confidentiality, integrity or availability impactreceipt
Scored fromCVSS v4.0 · the CNA's vectorreceipt
Weakness classCWE-91 XML Injection (aka Blind XPath Injection)receipt
Published consequencesCWE-91: Confidentiality, Integrity, Availability: Execute Unauthorized Code or Commands, Read Application Data, Modify Application Data[email protected]

CISA KEV & Federal Remediation Deadline from the record and CISA

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

First unaffected version, by branchkirby 4.9.0; kirby 5.4.0receipt
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 CNA6.9 MEDIUMreceipt
CVSS, NVD7.5 HIGHreceipt
Exploit probability0.00346 · top 72% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned byGitHub_Mreceipt
Recorded changes6 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productgetkirby kirbyreceipt
Published rangesgetkirby kirby < 4.9.0; getkirby kirby >= 5.0.0 < 5.4.0receipt

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

Kirby is an open-source content management system. Kirby's `Xml::value()` method has special handling for `<![CDATA[ ]]>` blocks. If the input value is already valid `CDATA`, it is not escaped a second time but allowed to pass through. However, prior to versions 4.9.0 and 5.4.0, it was possible to trick this check into allowing values that only contained a valid `CDATA` block but also contained other structured data outside of the `CDATA` block. This structured data would then also be allowed to pass through, circumventing the value protection. The `Xml::value()` method is used in `Xml::tag()`, `Xml::create()` and in the `Xml` data handler (e.g. `Data::encode($string, 'xml')`). receipt

Read the rest of the CNA's description

Both the vulnerable methods and the data handler are not used in the Kirby core. However they may be used in site or plugin code, e.g. to create XML strings from input data. If those generated files are passed to another implementation that assigns specific meaning to the XML schema, manipulation of this system's behavior is possible. Kirby sites that don't use XML generation in site or plugin code are not affected. The problem has been patched in Kirby 4.9.0 and Kirby 5.4.0. In all of the mentioned releases, Kirby has added additional checks that only allow unchanged `CDATA` passthrough if the entire string is made up of valid `CDATA` blocks and no structured data. This protects all uses of the method against the described vulnerability.

NVD's analysis a second authority

severity
7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
weakness
CWE-91
affected versions
getkirby kirby < 4.9.0; getkirby kirby >= 5.0.0 < 5.4.0
also scored by
[email protected] 6.9 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

The CNA scored it 6.9 and NVD 7.5. Both are shown because both were published; we do not pick one.

check it yourself github.com github.com github.com receipt

Movement the material steps

24 Apr 20260.00045
15 Jun 20260.00276 · scoring model v2026.06.15
23 Jun 20260.00346
Show all 6 observations
24 Apr 20260.00045
28 Apr 20260.0003
30 Apr 20260.00039
26 May 20260.00043
15 Jun 20260.00276
23 Jun 20260.00346

6 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 0.00346Published2026-04-24Index as of2026-06-23

The record had been public for 1 month when this index was last written.

Published 2026-04-24 receipt · Index as of 2026-06-23 derived

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