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NVD / CVE Program· CNA GitHub_M

CVE-2026-44642: Piwigo: SQL injection in upgrade authentication allows unauthenticated upgrade authorization bypass (PHP 8+)

Noroxi assessment

Priority: Monitor (action score 32/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.2% (FIRST EPSS); higher than 70.3% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. Special conditions such as timing or configuration are required.
  • Fixed version: Piwigo Piwigo 16.4.0.

Low priority for now. Upgrade to Piwigo Piwigo 16.4.0 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

Piwigo is a full featured open source photo gallery application for the web. Prior to 16.4.0, check_upgrade_access_rights() in admin/include/functions_upgrade.php conditionally escapes the submitted username only when the removed get_magic_quotes_gpc function exists, so PHP 8 and later concatenate an unauthenticated username directly into the upgrade authentication SQL query. When database upgrades are pending, a crafted query result can satisfy the status and password checks, set PHPWG_IN_UPGRADE, and authorize upgrade execution without valid administrator credentials. This can cause unauthorized database integrity changes and service disruption. This vulnerability is fixed in 16.4.0.

HighCVSS 8.1 · v3.1—No exploit Fix available
Published
Sep 25, 2026
Updated
Sep 25, 2026
EPSS
1.2% · 70th percentile

Report tools

JSON

Action score

32

Monitor

Low priority for now.

CVSS
32 / 40 · 8.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.2%

CISA SSVC decision

Exploitation
proof of concept
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · GitHub_M
8.1
NVD has not scored this yet; the score shown is the CNA’s.

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
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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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.

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Affected 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.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

  • Piwigo Piwigo

    • < 16.4.0affected

Same product

piwigo: all records

Other highest-scoring records for the same primary product.

  • CVE-2020-19213SQL Injection vulnerability in cat_move.php in piwigo v2.9.5, via the selection parameter to move_categories.
    44Plan
  • CVE-2023-33362Piwigo 13.6.0 is vulnerable to SQL Injection via in the "profile" function.
    42Plan
  • CVE-2017-10682SQL injection vulnerability in the administrative backend in Piwigo through 2.9.1 allows remote users to execute arbitrary SQL commands via
    41Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-42323Sep 25, 2026 · Piwigo: SQL Injection in Batch Manager
    28Monitor
  • ← EarlierCVE-2026-42324Sep 25, 2026 · Piwigo: Second-Order SQL Injection
    28Monitor
  • Later →CVE-2026-62262Sep 25, 2026 · Piwigo: Unauthenticated SQL injection in `pwg.images.filteredSearch.create`
    36Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Piwigo Piwigo16.4.0 · descriptionVendor (CNA)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

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.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-622620 days apartPiwigo: Unauthenticated SQL injection in `pwg.images.filteredSearch.create`
    36Monitor
  • CVE-2026-27634175 days apartPiwigo: Pre-auth SQL injection via date filter parameters in ws_std_image_sql_filter
    34Monitor
  • CVE-2026-423230 days apartPiwigo: SQL Injection in Batch Manager
    28Monitor
  • CVE-2026-423240 days apartPiwigo: Second-Order SQL Injection
    28Monitor
  • CVE-2026-27834175 days apartPiwigo: SQL Injection in pwg.users.getList API Method via filter Parameter
    28Monitor
  • CVE-2026-27885175 days apartPiwigo: SQL Injection in Activity.getList
    28Monitor

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

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-89 · Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-secondary

Root cause

The query text is built by concatenating user input. The database cannot tell where the data ends and the command begins.

The bug in code

The whole CWE-89 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
const owner = req.query.owner;const rows = await db.query(  "SELECT * FROM files WHERE owner = '" + owner + "'");

Fixed

ts
const owner = req.query.owner;const rows = await db.query(  "SELECT * FROM files WHERE owner = $1",  [owner]);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (3 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records