Medium

XSS in Apache HTTP Server mod_proxy_ftp HTML directory listing generation

IdentifiersCVE-2026-29170CWE-79· Improper Neutralization of Input…

CVE-2026-29170 is a cross-site scripting vulnerability in mod_proxy_ftp in Apache HTTP Server 2.4.67 and earlier. The flaw exists in the module's HTML directory list generation when Apache is used to list FTP directory contents through either forward proxy or reverse proxy configurations. According to the provided context, unsanitized output in the generated directory listing can allow script injection into the HTML returned to clients.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation can cause attacker-controlled script to be injected into proxied FTP directory listing pages rendered in a victim's browser. This can enable typical XSS outcomes such as session theft, execution of arbitrary client-side script in the origin context of the Apache-served page, content spoofing, and other browser-side attacks against users viewing the listing.

Mitigation

If you can’t patch tonight, do this now.

No specific workaround or mitigation for this vulnerability is provided in the supplied content. Based on the available information, the recommended action is to upgrade to Apache HTTP Server 2.4.68. Where immediate upgrade is not possible, reducing or disabling exposure of mod_proxy_ftp-generated FTP directory listings may reduce risk, but this is not stated as an official vendor workaround in the provided material.

Remediation

Patch, then assume compromise.

Upgrade Apache HTTP Server to version 2.4.68 or later. The provided context states that version 2.4.68 fixes this issue, with the fix identified as revision r1934982 in the 2.4.x branch.

PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType

Apache Software FoundationHttp Serverapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

7 SOURCESView more in app

cyber security newsNews

Jun 9, 2026

Apache HTTP Server 2.4.68 Released With Fix For Use-After-Free, DoS, XSS, and Buffer Overflow Flaws

A cross-site scripting vulnerability in Apache HTTP Server mod_proxy_ftp HTML directory listing generation affecting versions through 2.4.67.

opennet ruNews

Jun 5, 2026

�� http-�� Apache 2.4.68 � �� 13 ��

Apache HTTP Server vulnerability affecting mod_proxy_ftp, fixed in version 2.4.68.

opennetNews

Jun 5, 2026

�� http-�� Apache 2.4.68 � �� 13 ��

Apache HTTP Server vulnerability in mod_proxy_ftp.

downloads apacheNews

Jan 1, 2026

[no-title]

A cross-site scripting vulnerability in Apache HTTP Server mod_proxy_ftp affecting HTML directory listing generation for FTP contents in forward or reverse proxy configurations.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.

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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity3

Community discussion across Reddit, Mastodon, and other social sources.

EXTERNAL REFERENCES

MITRE CVE

cve.org · CVE-2026-29170

NVD

nvd.nist.gov/vuln/detail/CVE-2026-29170

MITRE CWE · CWE-79

Improper Neutralization of Input During Web…

Vendor Advisory

httpd.apache.org/security/vulnerabilities_24.html

Third Party Advisory

openwall.com/lists/oss-security/2026/06/08/5