CVE-2019-11049
No exploitation reported by the sources we read.
- Published2019-12-23
- WeaknessCWE-415
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
In PHP versions 7.3.x below 7.3.13 and 7.4.0 on Windows, when supplying custom headers to mail() function, due to mistake introduced in commit 78f4b4a2dcf92ddbccea1bb95f8390a18ac3342e, if the header is supplied in lowercase, this can result in double-freeing certain memory locations.
Timeline
dates in UTC- 2019-12-2303:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 15:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-11049?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-11049?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 30.x | = 30 | no fix published | NVD |
| 31.x | = 31 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 7.3 | ≥ 7.3.0, ≤ 7.3.13 | no fix published | NVD |
| 7.4 | = 7.4.0 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 10.0 | = 10.0 | no fix published | NVD |
1 more product in the sources.
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Vendor advisories
- CVE-2019-11049 Red Hat Product Security
php: double free when supplying custom headers to mail function
Festo Didactic SE MES PC
Festo Didactic SE MES PC shipped with Windows 10
Fix
- Vendor fix CISA ICSA-26-027-02 · 1 productFesto Didactic has released Factory Control Panel as a replacement for XAMPP on its MES PCs. Contact technical support at services.didactic@festo.com to obtain the current version of Factory Control Panel which includes fixes for these vulnerabilities.
Advisories and patches
- bugs.php.netPatch · Vendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- 2019-12-23
- Last Modified
- 2026-08-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2019-11049?
Is CVE-2019-11049 actively exploited?
What is the CVSS score for CVE-2019-11049?
Running PHP? Hear about its next vulnerability
Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.