CVE-2022-31630: OOB read due to insufficient input validation in imageloadfont()
Noroxi assessment
Priority: Monitor (action score 28/100)
- Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
- Probability of exploitation in the next 30 days: 1.3% (FIRST EPSS); higher than 70.9% of all records.
- Someone with local access to the system can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
- Fixed version: apcu-panel (AlmaLinux:8) 5.1.18-1.module_el8.6.0+2750+78feabcb, 5.1.20-1.module_el8.6.0+2739+efabdb8f; libzip (AlmaLinux:8) 1.6.1-1.module_el8.6.0+2750+78feabcb, 1.7.3-1.module_el8.6.0+2739+efabdb8f, 1.7.3-1.module_el8.6.0+3061+6878dd1b; libzip-devel (AlmaLinux:8) 1.6.1-1.module_el8.6.0+3239+bedf0508, 1.7.3-1.module_el8.6.0+2739+efabdb8f, 1.7.3-1.module_el8.6.0+3061+6878dd1b.
Low priority for now. Upgrade to apcu-panel (AlmaLinux:8) 5.1.18-1.module_el8.6.0+2750+78feabcb, 5.1.20-1.module_el8.6.0+2739+efabdb8f; libzip (AlmaLinux:8) 1.6.1-1.module_el8.6.0+2750+78feabcb, 1.7.3-1.module_el8.6.0+2739+efabdb8f, 1.7.3-1.module_el8.6.0+3061+6878dd1b; libzip-devel (AlmaLinux:8) 1.6.1-1.module_el8.6.0+3239+bedf0508, 1.7.3-1.module_el8.6.0+2739+efabdb8f, 1.7.3-1.module_el8.6.0+3061+6878dd1b or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
In PHP versions prior to 7.4.33, 8.0.25 and 8.1.12, when using imageloadfont() function in gd extension, it is possible to supply a specially crafted font file, such as if the loaded font is used with imagechar() function, the read outside allocated buffer will be used. This can lead to crashes or disclosure of confidential information.
- BDU:2022-07409
- ALSA-2023:0848
- ALSA-2023:0965
- ALSA-2023:2417
- ALSA-2023:2903
- DSA-5277-1
- openSUSE-SU-2024:12467-1
- RHSA-2023:0848
- RHSA-2023:0965
- RHSA-2023:2417
- RHSA-2023:2903
- RLSA-2023:0848
- RLSA-2023:0965
- RLSA-2023:2417
- RLSA-2023:2903
- SUSE-SU-2022:3997-1
- SUSE-SU-2022:4005-1
- SUSE-SU-2022:4068-1
- SUSE-SU-2022:4069-1
- Published
- Nov 14, 2022
- Updated
- Jun 17, 2026
- EPSS
- 1.3% · 70th percentile
- CWE
- CWE-131
Report tools
Action score
28
Monitor
Low priority for now.
- CVSS
- 28 / 40 · 7.1 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 1.3%
CNA vs NVD score
- NVD
- 7.1
- CNA · php
- 6.5
- 0.6 point gap
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- Proof of concept exists, no weaponized module
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| php | php | cpe:2.3:a:php:php |
Using php? Add it to your stack and be the first to know about CVEs like this one. (PHP)
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- php php7.4.0 and later · before 7.4.33
- php php8.0.0 and later · before 8.0.25
- php php8.1.0 and later · before 8.1.12
Versions reported by the vendor
Affected version ranges reported by the assigning authority (php). Independent of NVD's CPE analysis and usually ahead of it.
PHP Group PHP
- 7.4.x and later · before 7.4.33affected
- 8.0.x and later · before 8.0.25affected
- 8.1.x and later · before 8.1.12affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:8 | apcu-panel | before 5.1.18-1.module_el8.6.0+2750+78feabcb | 5.1.18-1.module_el8.6.0+2750+78feabcb |
| AlmaLinux:8 | apcu-panel | before 5.1.20-1.module_el8.6.0+2739+efabdb8f | 5.1.20-1.module_el8.6.0+2739+efabdb8f |
| AlmaLinux:8 | libzip | before 1.6.1-1.module_el8.6.0+2750+78feabcb | 1.6.1-1.module_el8.6.0+2750+78feabcb |
| AlmaLinux:8 | libzip | before 1.7.3-1.module_el8.6.0+2739+efabdb8f | 1.7.3-1.module_el8.6.0+2739+efabdb8f |
| AlmaLinux:8 | libzip | before 1.7.3-1.module_el8.6.0+3061+6878dd1b | 1.7.3-1.module_el8.6.0+3061+6878dd1b |
| AlmaLinux:8 | libzip | before 1.6.1-1.module_el8.6.0+3239+bedf0508 | 1.6.1-1.module_el8.6.0+3239+bedf0508 |
| AlmaLinux:8 | libzip-devel | before 1.6.1-1.module_el8.6.0+3239+bedf0508 | 1.6.1-1.module_el8.6.0+3239+bedf0508 |
| AlmaLinux:8 | libzip-devel | before 1.7.3-1.module_el8.6.0+2739+efabdb8f | 1.7.3-1.module_el8.6.0+2739+efabdb8f |
| AlmaLinux:8 | libzip-devel | before 1.7.3-1.module_el8.6.0+3061+6878dd1b | 1.7.3-1.module_el8.6.0+3061+6878dd1b |
| AlmaLinux:8 | libzip-devel | before 1.6.1-1.module_el8.6.0+2750+78feabcb | 1.6.1-1.module_el8.6.0+2750+78feabcb |
| AlmaLinux:8 | libzip-tools | before 1.6.1-1.module_el8.6.0+2750+78feabcb | 1.6.1-1.module_el8.6.0+2750+78feabcb |
| AlmaLinux:8 | libzip-tools | before 1.7.3-1.module_el8.6.0+3061+6878dd1b | 1.7.3-1.module_el8.6.0+3061+6878dd1b |
| AlmaLinux:8 | libzip-tools | before 1.7.3-1.module_el8.6.0+2739+efabdb8f | 1.7.3-1.module_el8.6.0+2739+efabdb8f |
| AlmaLinux:8 | libzip-tools | before 1.6.1-1.module_el8.6.0+3239+bedf0508 | 1.6.1-1.module_el8.6.0+3239+bedf0508 |
| AlmaLinux:8 | php | before 8.0.27-1.module_el8.7.0+3401+dfb61c00 | 8.0.27-1.module_el8.7.0+3401+dfb61c00 |
| AlmaLinux:8 | php | before 7.4.33-1.module_el8.8.0+3477+f828cbb0 | 7.4.33-1.module_el8.8.0+3477+f828cbb0 |
| AlmaLinux:8 | php-bcmath | before 8.0.27-1.module_el8.7.0+3401+dfb61c00 | 8.0.27-1.module_el8.7.0+3401+dfb61c00 |
| AlmaLinux:8 | php-bcmath | before 7.4.33-1.module_el8.8.0+3477+f828cbb0 | 7.4.33-1.module_el8.8.0+3477+f828cbb0 |
| AlmaLinux:8 | php-cli | before 7.4.33-1.module_el8.8.0+3477+f828cbb0 | 7.4.33-1.module_el8.8.0+3477+f828cbb0 |
| AlmaLinux:8 | php-cli | before 8.0.27-1.module_el8.7.0+3401+dfb61c00 | 8.0.27-1.module_el8.7.0+3401+dfb61c00 |
| AlmaLinux:8 | php-common | before 7.4.33-1.module_el8.8.0+3477+f828cbb0 | 7.4.33-1.module_el8.8.0+3477+f828cbb0 |
| AlmaLinux:8 | php-common | before 8.0.27-1.module_el8.7.0+3401+dfb61c00 | 8.0.27-1.module_el8.7.0+3401+dfb61c00 |
| AlmaLinux:8 | php-dba | before 8.0.27-1.module_el8.7.0+3401+dfb61c00 | 8.0.27-1.module_el8.7.0+3401+dfb61c00 |
| AlmaLinux:8 | php-dba | before 7.4.33-1.module_el8.8.0+3477+f828cbb0 | 7.4.33-1.module_el8.8.0+3477+f828cbb0 |
+96
Same product
php: all recordsOther highest-scoring records for the same primary product.
- CVE-2024-4577Argument Injection in PHP-CGIKEV99Now
- CVE-2019-11043Underflow in PHP-FPM can lead to RCEKEV99Now
- CVE-2012-1823sapi/cgi/cgi_main.c in PHP before 5.3.12 and 5.4.x before 5.4.2, when configured as a CGI script (aka php-cgi), does not properly handle queKEV99Now
Published before and after this one in the same product
- ← EarlierCVE-2022-31628Sep 28, 2022 · phar wrapper can occur dos when using quine gzip file22Monitor
- ← EarlierCVE-2022-31629Sep 28, 2022 · $_COOKIE names string replacement (. -> _): cookie integrity vulnerabilities41Plan
- Later →CVE-2023-0568Feb 16, 2023 · Array overrun in common path resolve code32Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| almalinux:apcu-panel | 5.1.20-1.module_el8.6.0+2739+efabdb8f · AlmaLinux:8 | Package registry (OSV) |
| almalinux:libzip | 1.7.3-1.module_el8.6.0+2739+efabdb8f · AlmaLinux:8 | Package registry (OSV) |
| almalinux:libzip-devel | 1.7.3-1.module_el8.6.0+2739+efabdb8f · AlmaLinux:8 | Package registry (OSV) |
| almalinux:libzip-tools | 1.7.3-1.module_el8.6.0+2739+efabdb8f · AlmaLinux:8 | Package registry (OSV) |
| almalinux:php | 8.0.27-1.module_el8.7.0+3401+dfb61c00 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:php-bcmath | 8.0.27-1.module_el8.7.0+3401+dfb61c00 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:php-cli | 8.0.27-1.module_el8.7.0+3401+dfb61c00 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:php-common | 8.0.27-1.module_el8.7.0+3401+dfb61c00 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:php-dba | 8.0.27-1.module_el8.7.0+3401+dfb61c00 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:php-dbg | 8.0.27-1.module_el8.7.0+3401+dfb61c00 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:php-devel | 8.0.27-1.module_el8.7.0+3401+dfb61c00 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:php-embedded | 8.0.27-1.module_el8.7.0+3401+dfb61c00 · AlmaLinux:8 | Package registry (OSV) |
| alpine:php7 | 7.4.33-r0 · Alpine:v3.14 | Package registry (OSV) |
| alpine:php8 | 8.0.25-r0 · Alpine:v3.15 | Package registry (OSV) |
| alpine:php81 | 8.1.12-r0 · Alpine:v3.16 | Package registry (OSV) |
| alpine:php82 | 8.2.0_rc5-r0 · Alpine:v3.18 | Package registry (OSV) |
| debian:php7.4 | 7.4.33-1+deb11u1 · Debian:11 | Package registry (OSV) |
| opensuse:apache2-mod_php7 | 7.4.33-150400.4.13.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| opensuse:apache2-mod_php8 | 8.0.25-150400.4.17.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| opensuse:php7 | 7.4.33-150400.4.13.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| opensuse:php7-embed | 7.4.33-150400.4.13.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| opensuse:php7-fastcgi | 7.4.33-150400.4.13.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| opensuse:php7-fpm | 7.4.33-150400.4.13.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| opensuse:php7-test | 7.4.33-150400.4.13.2 · openSUSE:Leap 15.4 | Package registry (OSV) |
| opensuse:php8 | 8.0.25-150400.4.17.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| opensuse:php8-embed | 8.0.25-150400.4.17.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| opensuse:php8-fastcgi | 8.0.25-150400.4.17.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| opensuse:php8-fpm | 8.0.25-150400.4.17.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| opensuse:php8-test | 8.0.25-150400.4.17.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| red hat:apcu-panel | 0:5.1.20-1.module+el8.6.0+13671+84712317 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
+31
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Proof-of-concept repository on GitHub ×2
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Proof-of-concept repository on GitHub | stars:1 | 2026-03-14 |
| Proof-of-concept repository on GitHub | stars:1 | 2026-03-14 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- Published
- First PoC+1216 d
- TodayNov 10, 2026+1458 d
No history yet (it accumulates with the daily EPSS job).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
- cmb@php.netreporter
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- No account or password is required.
- A user must open a link or visit a page.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-131 · Incorrect Calculation of Buffer SizeCVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Change log
- Fix✗ → ✓
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