`CVE-2026-54550`

7.4 High Protected by RASP

Published 20 days ago. NVD backfills CPE data for days or weeks after publication, and OSV and the exploit indexes lag too. Scope and status here may change.

Description

IzPack is a widely used tool for packaging applications on the Java platform as cross-platform installers. In 5.2.6 and earlier, UnpackerBase.unpack() in izpack-installer/src/main/java/com/izforge/izpack/installer/unpacker/UnpackerBase.java obtains an attacker-controlled PackFile targetPath, passes it through IoHelper.translatePath(), which only converts separators, and constructs a File without normalizing parent-directory segments or enforcing destination containment. A malicious installer pack entry containing ../ sequences can therefore write outside the intended installation directory to startup folders, executable search paths, or other locations accessible with the victim's privileges when the victim runs the installer.

CWE-22 · Path traversal

Exploitation Status

Proof of concept only

A proof of concept exists, but no reviewed exploit catalogue carries this CVE. Demonstrating a defect and weaponising it are different amounts of work.

CVSS E:P

CISA KEV not listed
CISA Vulnrichment exploitation: poc CISA concluded an exploit has been demonstrated, typically from a vendor advisory, which leaves no artifact to index. Automatable: no, technical impact: partial.
Indexed PoC none indexed
EPSS 0.38% chance in 30 days

Waratek Defense Posture

Protected by RASP

A Waratek agent blocks this today.

Applicable rule: Promoted to MITIGATED-BY-RASP (security rule): this CVE's weakness (CWE-22: Path Traversal) can be mitigated by an ARMR path-traversal security rule that blocks this class of attack at the JVM level, without requiring a CVE-specific patch.

Protection full a general security rule for the vulnerability class
Action available security rule
Review automated inferred
Record active

Decided by secure-rule-match : A vulnerability class already blocked by an ARMR security rule

Finding Promoted to MITIGATED-BY-RASP (security rule): this CVE's weakness (CWE-22: Path Traversal) can be mitigated by an ARMR path-traversal security rule that blocks this class of attack at the JVM level, without requiring a CVE-specific patch.

Candidate fix https://github.com/izpack/izpack/commit/4233ba38d0f1825f9cf3e0204e5261a5498e29d8 : a commit: the change itself

Decided by	`secure-rule-match` : A vulnerability class already blocked by an ARMR security rule
Finding	Promoted to MITIGATED-BY-RASP (security rule): this CVE's weakness (CWE-22: Path Traversal) can be mitigated by an ARMR path-traversal security rule that blocks this class of attack at the JVM level, without requiring a CVE-specific patch.
Candidate fix	https://github.com/izpack/izpack/commit/4233ba38d0f1825f9cf3e0204e5261a5498e29d8 : a commit: the change itself

CVSS

7.4 HIGH v3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N 1 metric

VRT selects the newest version's highest entry and publishes it as cvssScore, newest rather than largest because scores are not comparable across versions, and highest rather than first because the first entry is frequently a CNA placeholder scoring 0.0 over NVD's own analysis.

Version Score Band Vector Assigner Type

CVSS 3.1 7.4 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N security-advisories@github.com Secondary published

Version	Score	Band	Vector	Assigner	Type
CVSS 3.1	7.4	HIGH	`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N`	security-advisories@github.com	Secondary	published

Affected Software & Releases

☕ Maven Library Packages

Artifact coordinates and fix boundaries from OSV.dev

Package Coordinate Introduced Fixed Last affected

org.codehaus.izpack:izpack-installer 0 none 5.2.6

Package Coordinate	Introduced	Fixed	Last affected
`org.codehaus.izpack:izpack-installer`	0	none	5.2.6

🖥️ Product CPEs & Version Ranges

1 product(s) over 1 version claims (uncapped)

Source	Vendor	Product	Scheme	Affected Versions
osv	org.codehaus.izpack	izpack-installer	generic	≤ 5.2.6

Source

Vendor

Product

Scheme

Affected Versions

osv

org.codehaus.izpack

izpack-installer

generic

≤ 5.2.6

References

URL	Tags
https://github.com/izpack/izpack/commit/4233ba38d0f1825f9cf3e0204e5261a5498e29d8	commit
https://github.com/izpack/izpack/security/advisories/GHSA-f63g-88cj-hjf9	WEB
https://github.com/izpack/izpack/pull/1193	WEB
https://github.com/izpack/izpack/commit/8b7c6792c4fe85e3b1759c106aae39b904848466	WEB
https://github.com/izpack/izpack	PACKAGE

URL

Timeline

Published 2026-08-26 Last modified 2026-09-09

Published	2026-08-26	By the CVE Program.
NVD record modified	2026-09-09	NVD's own last-modified date for this record.

Published

2026-08-26

By the CVE Program.

NVD record modified

2026-09-09

NVD's own last-modified date for this record.

Pipeline policy audit (15 of 21 rules evaluated)

15 of 21 rules ran. The rest were never reached, because an earlier stage settled the CVE, a distinct claim from a rule that ran and found nothing.

# Rule Outcome Status Detail

identity: Does this identifier describe a vulnerability at all? first match wins

1 rejected no-match CVE Program withdrawal of this identifier

scope: Is the vulnerability ARMR's to address? first match wins

2 armr-patch-file no-match An ARMR patch file on disk for this CVE

3 armr-secure-rule-file no-match An ARMR security-rule template on disk for this CVE

4 manual-classification no-match A researcher's recorded decision for this specific CVE

5 manual classification no-match Manual classification of this CVE in the legacy dataset

6 non-java-upstream no-match A root cause in non-Java code: an OS kernel, a C library, or a bundled runtime

7 oracle-component no-match The defect being in a component of a tracked product the agent does not reach: JavaFX, the Java SE installer, the native WebLogic proxy plug-in. Oracle gives these no CPE of their own and names them only in the description.

8 osv-maven matched Queued for review Maven packages: org.codehaus.izpack:izpack-installer

9 cna-maven-package not-reached An affected Maven artifact named by the CNA itself

10 known-cpe-product not-reached An NVD CPE naming a product ARMR tracks

11 cna-cpe-product not-reached A CPE the CNA published naming a tracked product. Oracle publishes these on advisory day, months before NVD.

12 oracle-advisory-family not-reached A tracked product family named in Oracle's own risk matrix. CPE cannot carry a suite name, only a module.

13 non-deployable-product not-reached The only affected product being a sealed appliance image, where Java runs but no -javaagent can be attached

14 unmatched-product not-reached No tracked product matched above, and none present at all

disposition: What do we do about one that is? cumulative: every rule gets a turn

15 patch-hint matched Mitigation candidate References include candidate fix URL (commit tier): https://github.com/izpack/izpack/commit/4233ba38d0f1825f9cf3e0204e5261a5498e29d8

16 open-source-maven skipped The affected package being open source on Maven, so the fix can be read

17 poc-derivable skipped An indexed exploit to reverse-engineer, where there is no source to read

18 no-exploit skipped With no fix path, a public exploit, or a CISA record of one

19 secure-rule-match decided it matched Protected by RASP CWE-22 (Path Traversal) is mitigable by an ARMR path-traversal security rule.

20 below-action-threshold skipped Medium or Low severity, no KEV listing, no PoC clearing the evidence bar, no CISA verdict, no Oracle advisory

21 no-exploit-published skipped A published working exploit for this candidate, not only a proof of concept, a forecast, or nothing at all

Raw stored JSON document for this CVE ↗ · NVD ↗ · CVE.org ↗