CVE-2002-1783: n/a vulnerability

CVE-2002-1783: CRLF injection vulnerability in PHP 4.2.1 through 4.2.3, when allow_url_fopen is enabled, allows remote att...

CRLF injection vulnerability in PHP 4.2.1 through 4.2.3, when allow_url_fopen is enabled, allows remote attackers to modify HTTP headers for outgoing requests by causing CRLF sequences to be injected into arguments that are passed to the (1) fopen or (2) file functions.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 8, 2024, 03:34 UTC (UTC+00:00)

Security readout for executives and security teams

This is an old PHP flaw where certain remote file reads could let an attacker influence HTTP headers sent by the server. Business risk is mainly in legacy environments still running PHP 4.2.1 through 4.2.3 with allow_url_fopen enabled. Exposure is likely limited to legacy PHP 4.2.1 through 4.2.3 deployments where allow_url_fopen is enabled and attacker-controlled input can reach fopen() or file() URL arguments. Treat this as a legacy exposure issue. It is not KEV-listed in the bundle, but any internet-facing system still using affected PHP should be remediated because unsupported runtime risk compounds quickly. Mitigation focus: Inventory systems for PHP 4.2.1 through 4.2.3.; Check vendor guidance, including Debian DSA-168, for supported fixes.; Disable allow_url_fopen where remote URL file access is unnecessary..

Prepared: Jun 29, 2026, 19:56 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jun 28, 2005, 04:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors

0Timeline events

0ADP providers

2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
php-fopen-crlf-injection(10080)CVE reference · vdb-entry, x_refsource_XF

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

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