PgHero Allows Information Disclosure Through EXPLAIN Feature

published 2023-01-05 3 y ago modified 2026-06-17 4 mo ago also GHSA-vf99-xw26-86g5 , EUVD-2023-0557

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.9%; EPSS 0.9% chance of exploitation in 30 days, percentile 59%
public exploits: 0; none known

PgHero before 3.1.0 allows Information Disclosure via EXPLAIN because query results may be present in an error message. (Depending on database user privileges, this may only be information from the database, or may be information from file contents on the database server.)

Patch / fix

fixed in 2

rubygems pghero 3.1.0
pghero_project pghero 3.1.0

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 19 mo ago (2025-04-07)

Exploit prediction

0.87% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/ankane/pghero/issues/439 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
GitHub	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem	package	affected	fixed in
rubygems	pghero	<3.1.0	3.1.0

Classification

Weakness

CWE-209 Generation of Error Message Containing Sensitive Information

References

github.com /ankane/pghero/issues/439
web, exploit, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2023-22626
advisory
github.com /ankane/pghero
package
github.com /rubysec/ruby-advisory-db/blob/master/gems/pghero/CVE-2023-22626.yml
web

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary