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CVE-2002-1783
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…
Medium5.0EPSS 16.7%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
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.
Timeline
Published
- 1 day later
· 1 day later
ID reserved
By mitre
- 19 years later
· 19 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
- EPSS (exploitation in 30 days)
- 16.7% · top 2.9% of all CVEs (8 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.
Weakness
- n/a
Affected products
n/a
- affected n/a
References (5)
- 20020912 Re: PHP fopen() CRLF Injection (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 5681 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- php-fopen-crlf-injection(10080) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- DSA-168 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- 20020909 PHP fopen() CRLF Injection (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2002-1783)Record last updated .