CVE-2026-31827Network attack vector

Paste deletion via collection-wide TTL index replacement

Published Mar 10, 2026 · Updated Mar 10, 2026

Race condition in Blue-B Alienbin 1.0.0 and earlier allows remote attackers to delete other users' pastes through anonymous submissions. The /save handler in server.js drops and recreates one MongoDB TTL index for the entire post collection, applying each submitter's chosen lifetime to every stored paste. No account is required; repeated 30-second submissions cause existing pastes, including those intended to last seven days, to be deleted after 30 seconds.

CVSS severity7.1
High
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Race condition in Blue-B Alienbin 1.0.0 and earlier allows remote attackers to delete other users' pastes through anonymous submissions. The /save handler in server.js drops and recreates one MongoDB TTL index for the entire post collection, applying each submitter's chosen lifetime to every stored paste. No account is required; repeated 30-second submissions cause existing pastes, including those intended to last seven days, to be deleted after 30 seconds.

The record

CVE
CVE-2026-31827
Published
Mar 10, 2026
Updated
Mar 10, 2026
Vendor
Blue-B
Product
Alienbin
Classifications
CWE-362, T1485
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=<= 1.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Blue-B · Alienbinversion=<= 1.0.0

Published CVSS scores

7.1GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1485Data Destruction

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo