CVE-2019-11048 | Temporary files are not cleaned after OOM when parsing HTTP request data

Exp

In PHP versions 7.2.x below 7.2.31, 7.3.x below 7.3.18 and 7.4.x below 7.4.6, when HTTP file uploads are allowed, supplying overly long filenames or field names could lead PHP engine to try to allocate oversized memory storage, hit the memory limit and stop processing the request, without cleaning up temporary files created by upload request. This potentially could lead to accumulation of uncleaned temporary files exhausting the disk space on the target server.

Published: 2020-05-20 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-11048 is rated High Exploit Risk (63.6/100): CVSS Medium severity, with high exploitation likelihood (EPSS 6.26%, 93th percentile). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2019-11048

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2019-11048

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 12.72% 6.26% -6.45%
2 2026-03-04 4.19% 12.72% +8.53%
3 2026-03-01 — 4.19% —

Full EPSS history (45 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-11048

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 3.9 1.4 [email protected]
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 3.9 1.4 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2019-11048

OS Trackers for CVE-2019-11048

vendor priority summary link
alpine medium CVE-2019-11048: 1 source package rows (php7); 1 state rows across 1 repos (edge-community); fixed 1, open 0. https://security.alpinelinux.org/vuln/CVE-2019-11048
debian not yet assigned CVE-2019-11048 not yet assigned priority: Debian including 1 source packages (php7.4), 1 status rows across 1 suites (bullseye): resolved 1. https://security-tracker.debian.org/tracker/CVE-2019-11048
redhat medium — https://access.redhat.com/security/cve/CVE-2019-11048
ubuntu medium CVE-2019-11048 medium priority: Ubuntu including 5 source packages (php5, php7.0, php7.2, php7.3, php7.4), 30 status rows across 6 suites (bionic, eoan, focal, trusty, upstream, xenial): DNE 20, released 8, needs-triage 2. https://ubuntu.com/security/CVE-2019-11048

Affected software / configurations for CVE-2019-11048

Vendor Product Version Raw CPE
php php >= 7.2.0, < 7.2.31 cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
php php >= 7.3.0, < 7.3.18 cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
php php >= 7.4.0, < 7.4.6 cpe:2.3:a:php:php:*:*:*:*:*:*:*:*

References for CVE-2019-11048

URL Tags
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00045.html
https://bugs.php.net/bug.php?id=78875 Exploit Issue Tracking Vendor Advisory
https://bugs.php.net/bug.php?id=78876 Exploit Issue Tracking Vendor Advisory
https://lists.debian.org/debian-lts-announce/2020/06/msg00033.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OBA3TFZSP3TB5N4G24SO6BI64RJZXE3D/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XMDUQ7XFONY3BWTAQQUD3QUGZT6NFZUF/
https://security.netapp.com/advisory/ntap-20200528-0006/
https://usn.ubuntu.com/4375-1/
https://www.debian.org/security/2020/dsa-4717
https://www.debian.org/security/2020/dsa-4719
https://www.oracle.com/security-alerts/cpuApr2021.html
https://www.oracle.com/security-alerts/cpuoct2020.html
https://www.tenable.com/security/tns-2021-14
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