Vulnerability in github.com/monetr/monetr (CVE-2026-39901)
Summary
Vulnerability in github.com/monetr/monetr (CVE-2026-39901). Data can be tampered with by attackers. Exploitable via DELETE. Mitigation: upgrade to 1.12.3 or later.
Original description
The description as published by the source.
monetr is a budgeting application focused on planning for recurring expenses. Prior to 1.12.3, a transaction integrity flaw allows an authenticated tenant user to soft-delete synced non-manual transactions through the transaction update endpoint, despite the application explicitly blocking deletion of those transactions via the normal DELETE path. This bypass undermines the intended protection for imported transaction records and allows protected transactions to be hidden from normal views. This vulnerability is fixed in 1.12.3.
Source: NIST National Vulnerability Database NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-39901 has been found in github.com/monetr/monetr.
Attackers can target a specific entry point like DELETE over the network to misuse the product.
Data can be tampered with by attackers. CVSS score: 5.7/10.
What to do: upgrade github.com/monetr/monetr to 1.12.3 or later.
If unsure, ask your IT team or search "github.com/monetr/monetr CVE-2026-39901" on the vendor's site.
CVE-2026-39901 (github.com/monetr/monetr) — CWE-285 / CVSS v3 5.7
Attack vector: remote (network-reachable)
Attack surface: DELETE / PUT / Transaction / deletedAt
Patched: 1.12.3 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-285) exists in github.com/monetr/monetr. Attackers reach the vulnerable code path via DELETE.
Check the vendor advisory for the affected versions of github.com/monetr/monetr. Attack surface: DELETE / PUT / Transaction / deletedAt.
Severity: Medium (CVSS 5.7/10). Data can be tampered with by attackers.
Update to 1.12.3.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'github.com/monetr/monetr' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'github.com/monetr/monetr' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
github.com/monetr/monetrを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade github.com/monetr/monetr to 1.12.3ステージング環境で 1.12.3 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory github.com
- advisory nvd.nist.gov
- advisory github.com
- package github.com
- web github.com