CVE-2025-3818Public exploitNetwork attack vector

SQL injection via unescaped sequence name

Published Apr 19, 2025 · Updated May 29, 2025

SQL injection in web.py 0.70 allows remote authenticated users to read or alter PostgreSQL data through a crafted sequence name. PostgresDB._process_insert_query appends seqname directly inside a quoted currval() statement without validation or parameterization. Reachability requires an application path that lets a low-privileged remote user influence the sequence name passed to a PostgreSQL insert.

CVSS severity5.3
Medium
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in web.py 0.70 allows remote authenticated users to read or alter PostgreSQL data through a crafted sequence name. PostgresDB._process_insert_query appends seqname directly inside a quoted currval() statement without validation or parameterization. Reachability requires an application path that lets a low-privileged remote user influence the sequence name passed to a PostgreSQL insert.

The record

CVE
CVE-2025-3818
Published
Apr 19, 2025
Updated
May 29, 2025
Vendor
web.py
Product
web.py
Classifications
CWE-74, CWE-89, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 19, 2025CVE publishedPublication date reported by the CVE source.
  2. May 29, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.70

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

web.py · web.pyversion=0.70

Published CVSS scores

6.3VulDBCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
5.3VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component
CWE-89SQL Injection
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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