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NVD / CVE Program· CNA redhat

CVE-2026-18147: Freeipa: ipa: freeipa/idm: cross-site scripting vulnerability allows arbitrary code execution via crafted url

Noroxi assessment

Priority: Monitor (action score 32/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.42% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: ipa-client (AlmaLinux:10) 4.13.4-1.el10_2; ipa-client-common (AlmaLinux:10) 4.13.4-1.el10_2; ipa-client-encrypted-dns (AlmaLinux:10) 4.13.4-1.el10_2.

Low priority for now. Upgrade to ipa-client (AlmaLinux:10) 4.13.4-1.el10_2; ipa-client-common (AlmaLinux:10) 4.13.4-1.el10_2; ipa-client-encrypted-dns (AlmaLinux:10) 4.13.4-1.el10_2 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A flaw was found in FreeIPA. An unauthenticated remote attacker could exploit a DOM Cross-Site Scripting (XSS) vulnerability in the FreeIPA/IdM Web UI password reset page. By enticing a victim to click a specially crafted link and complete a password reset, the attacker could inject and execute arbitrary JavaScript code. This allows the attacker to perform actions within the victim's authenticated session, potentially leading to full administrative control if an IdM administrator is targeted.

HighCVSS 8.1 · v3.1—No exploit Fix available
Published
Sep 9, 2026
Updated
Oct 26, 2026
EPSS
0.4% · 36th percentile

Report tools

JSON

Action score

32

Monitor

Low priority for now.

CVSS
32 / 40 · 8.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · redhat
8.1
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Limit the impact of XSS

This is a cross-site scripting (XSS) vulnerability. A well-configured Content-Security-Policy doesn't fix it, but greatly reduces its impact. Check your site's CSP and other security headers for free.

Check security headers

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • Red Hat Red Hat Enterprise Linux 10

    • 0:4.13.4-1.el10_2 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support

    • 0:4.12.2-15.el10_0.7 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 6

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 7

    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux 8

    • 8100020261007071200.143e9e98 and laternot affected · rpm
    • 8100020261007070536.823393f5 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support

    • 8060020261008134123.c1533a64 and laternot affected · rpm
    • 8060020261008133528.ada582f1 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

    • 8060020261008134123.c1533a64 and laternot affected · rpm
    • 8060020261008133528.ada582f1 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service

    • 8080020261007080925.e581a9e4 and laternot affected · rpm
    • 8080020261007071832.b0a6ceea and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions

    • 8080020261007080925.e581a9e4 and laternot affected · rpm
    • 8080020261007071832.b0a6ceea and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 9

    • 0:4.13.4-1.el9_8 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

    • 0:4.10.1-12.el9_2.7 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

    • 0:4.11.0-15.el9_4.9 and laternot affected · rpm

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:10ipa-clientbefore 4.13.4-1.el10_24.13.4-1.el10_2
AlmaLinux:10ipa-client-commonbefore 4.13.4-1.el10_24.13.4-1.el10_2
AlmaLinux:10ipa-client-encrypted-dnsbefore 4.13.4-1.el10_24.13.4-1.el10_2
AlmaLinux:10ipa-client-epnbefore 4.13.4-1.el10_24.13.4-1.el10_2
AlmaLinux:10ipa-client-sambabefore 4.13.4-1.el10_24.13.4-1.el10_2
AlmaLinux:10ipa-commonbefore 4.13.4-1.el10_24.13.4-1.el10_2
AlmaLinux:10ipa-selinuxbefore 4.13.4-1.el10_24.13.4-1.el10_2
AlmaLinux:10ipa-selinux-lunabefore 4.13.4-1.el10_24.13.4-1.el10_2
AlmaLinux:10ipa-selinux-nfastbefore 4.13.4-1.el10_24.13.4-1.el10_2
AlmaLinux:10ipa-serverbefore 4.13.4-1.el10_24.13.4-1.el10_2
AlmaLinux:10ipa-server-commonbefore 4.13.4-1.el10_24.13.4-1.el10_2
AlmaLinux:10ipa-server-dnsbefore 4.13.4-1.el10_24.13.4-1.el10_2
AlmaLinux:10ipa-server-encrypted-dnsbefore 4.13.4-1.el10_24.13.4-1.el10_2
AlmaLinux:10ipa-server-trust-adbefore 4.13.4-1.el10_24.13.4-1.el10_2
AlmaLinux:10python3-ipaclientbefore 4.13.4-1.el10_24.13.4-1.el10_2
AlmaLinux:10python3-ipalibbefore 4.13.4-1.el10_24.13.4-1.el10_2
AlmaLinux:10python3-ipaserverbefore 4.13.4-1.el10_24.13.4-1.el10_2
AlmaLinux:10python3-ipatestsbefore 4.13.4-1.el10_24.13.4-1.el10_2
AlmaLinux:8bind-dyndb-ldapbefore 11.6-6.module_el8.10.0+3980+d78e8e9011.6-6.module_el8.10.0+3980+d78e8e90
AlmaLinux:8custodiabefore 0.6.0-3.module_el8.6.0+2881+2f24dc920.6.0-3.module_el8.6.0+2881+2f24dc92
AlmaLinux:8ipa-clientbefore 4.9.13-21.module_el8.10.0+4302+2d2000af.34.9.13-21.module_el8.10.0+4302+2d2000af.3
AlmaLinux:8ipa-client-commonbefore 4.9.13-21.module_el8.10.0+4302+2d2000af.34.9.13-21.module_el8.10.0+4302+2d2000af.3
AlmaLinux:8ipa-client-epnbefore 4.9.13-21.module_el8.10.0+4302+2d2000af.34.9.13-21.module_el8.10.0+4302+2d2000af.3
AlmaLinux:8ipa-client-sambabefore 4.9.13-21.module_el8.10.0+4302+2d2000af.34.9.13-21.module_el8.10.0+4302+2d2000af.3

+96

Same product

red hat: all records

Other highest-scoring records for the same primary product.

  • CVE-2025-10230Samba: command injection in wins server hook script
    52Plan
  • CVE-2026-4631Cockpit: cockpit: unauthenticated remote code execution due to ssh command-line argument injection
    44Plan
  • CVE-2026-76578Ipa: freeipa: freeipa: unauthenticated ldap client can obtain administrator credentials via the self-managed-token aci
    39Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2026-18090Sep 8, 2026 · Gdk-pixbuf: gdk-pixbuf: heap out-of-bounds read in uncompress() via crafted icns rle block
    24Monitor
  • ← EarlierCVE-2026-87766Sep 9, 2026 · Bubblewrap: bubblewrap: symlink traversal via /oldroot allows writing files outside sandbox during setup
    35Monitor
  • Later →CVE-2026-87853Sep 9, 2026 · Sssd: sssd: idp authentication prefix comparison allows cross-user impersonation
    30Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
almalinux:ipa-client4.13.4-1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:ipa-client-common4.13.4-1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:ipa-client-encrypted-dns4.13.4-1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:ipa-client-epn4.13.4-1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:ipa-client-samba4.13.4-1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:ipa-common4.13.4-1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:ipa-selinux4.13.4-1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:ipa-selinux-luna4.13.4-1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:ipa-selinux-nfast4.13.4-1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:ipa-server4.13.4-1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:ipa-server-common4.13.4-1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:ipa-server-dns4.13.4-1.el9_8 · AlmaLinux:9Package registry (OSV)
red hat:ipa0:4.13.4-1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:ipa-client0:4.13.4-1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:ipa-client-common0:4.13.4-1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:ipa-client-debuginfo0:4.13.4-1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:ipa-client-encrypted-dns0:4.13.4-1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:ipa-client-epn0:4.13.4-1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:ipa-client-samba0:4.13.4-1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:ipa-common0:4.13.4-1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:ipa-debuginfo0:4.13.4-1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:ipa-debugsource0:4.13.4-1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:ipa-selinux0:4.13.4-1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:ipa-selinux-luna0:4.13.4-1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
rocky linux:bind-dyndb-ldap0:11.6-6.module+el8.10.0+1960+1ed527b3 · Rocky Linux:8Package registry (OSV)
rocky linux:custodia0:0.6.0-3.module+el8.9.0+1371+ffa84eb9 · Rocky Linux:8Package registry (OSV)
rocky linux:ipa0:4.13.4-1.el9_8 · Rocky Linux:9Package registry (OSV)
rocky linux:ipa-healthcheck0:0.12-6.module+el8.10.0+2053+a0a9dc19 · Rocky Linux:8Package registry (OSV)
rocky linux:opendnssec0:2.1.7-2.module+el8.10.0+1960+1ed527b3 · Rocky Linux:8Package registry (OSV)
rocky linux:python-jwcrypto0:0.5.0-2.module+el8.10.0+1818+2dfda7a6 · Rocky Linux:8Package registry (OSV)

+6

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
None

Weakness class (CWE)

CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

nvd-secondary

Root cause

User content is inserted into the page as HTML. The browser interprets the content as code rather than data.

The bug in code

The whole CWE-79 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
commentEl.innerHTML = comment.body;

Fixed

ts
commentEl.textContent = comment.body;

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓
  2. SSVC exploitation— → none

For records you follow, these changes also arrive as notifications. →

References

Show all references (10 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records