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CVE-2026-39901

monetr: Protected Transactions Deletable via PUT

5.7 MediumFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
Required

What an attacker can affect

Confidentiality
None
Integrity
High
Availability
None

Exploit likelihood

0.30%Up 0.3 points since Apr 9, 2026
90%50%10%1%

What each source reports

CVE List Score used 5.7

monetr: Protected Transactions Deletable via PUT

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.

Record
CVE-2026-39901
CVSS 3.1
5.7 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N
Weakness
CWE-285
Updated
2026-11-02
EUVDEUVD-2026-20641 5.7

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.

Record
EUVD-2026-20641
CVSS 3.1
5.7 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-hqxq-hwqf-wg83 5.7

monetr: Protected Transactions Deletable via PUT

Summary

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.

Details

The issue affects the transaction update path for synced transactions associated with non-manual links. The intended policy is clearly enforced in the DELETE handler: deletion of synced transactions for non-manual links is rejected with an error indicating that such transactions cannot be deleted.

However, the PUT update path still accepts a client-controlled full Transaction object and persists fields that should be server-managed, including deletedAt. The update logic appears to restrict only selected fields, which leaves deletedAt attacker-controllable.

Verified behavior on the same synced transaction showed:

  • DELETE was denied with the expected protection error for non-manual links
  • PUT with a user-supplied deletedAt value succeeded and returned 200 OK
  • a subsequent transaction list no longer showed the transaction
  • GET by transaction ID still returned the record with deletedAt populated

This demonstrates a policy bypass: although the server explicitly defines synced transactions on non-manual links as non-deletable through the dedicated delete route, the same outcome can still be achieved through the update route by setting the soft-delete field directly.

The vulnerability is therefore not a simple UI inconsistency. It is a server-side authorization and integrity flaw caused by trusting a client-supplied full transaction object and failing to protect sensitive server-managed fields from modification.

PoC

The issue can be reproduced by identifying a synced transaction on a non-manual link, confirming that the normal DELETE route rejects deletion, then submitting an update request that sets the transaction’s deletedAt field. The transaction will then disappear from normal listing views even though direct retrieval still shows the record as soft-deleted.

Impact

  • Type: Authorization bypass / integrity violation
  • Who is impacted: Authenticated tenant users and any deployment relying on synced transaction immutability for non-manual links
  • Security impact: Attackers can hide or effectively delete protected imported transactions that should not be deletable, compromising transaction history, bookkeeping integrity, and trust in audit-relevant server-managed fields
  • Attack preconditions: The attacker must be authenticated and able to access a synced transaction within their own tenant/account scope
Record
GHSA-hqxq-hwqf-wg83
CVSS 3.1
5.7 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N
Weakness
CWE-285
Updated
2026-11-02
NVD 5.7

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.

Record
CVE-2026-39901
CVSS 3.1
5.7 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N
Weakness
CWE-285
Updated
2026-11-02
OSV 5.7

monetr: Protected Transactions Deletable via PUT

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.

Record
CVE-2026-39901
CVSS 3.1
5.7 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N
Weakness
CWE-285
Updated
2026-11-02
OSVGHSA-hqxq-hwqf-wg83 5.7

monetr: Protected Transactions Deletable via PUT

Summary

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.

Details

The issue affects the transaction update path for synced transactions associated with non-manual links. The intended policy is clearly enforced in the DELETE handler: deletion of synced transactions for non-manual links is rejected with an error indicating that such transactions cannot be deleted.

However, the PUT update path still accepts a client-controlled full Transaction object and persists fields that should be server-managed, including deletedAt. The update logic appears to restrict only selected fields, which leaves deletedAt attacker-controllable.

Verified behavior on the same synced transaction showed:

  • DELETE was denied with the expected protection error for non-manual links
  • PUT with a user-supplied deletedAt value succeeded and returned 200 OK
  • a subsequent transaction list no longer showed the transaction
  • GET by transaction ID still returned the record with deletedAt populated

This demonstrates a policy bypass: although the server explicitly defines synced transactions on non-manual links as non-deletable through the dedicated delete route, the same outcome can still be achieved through the update route by setting the soft-delete field directly.

The vulnerability is therefore not a simple UI inconsistency. It is a server-side authorization and integrity flaw caused by trusting a client-supplied full transaction object and failing to protect sensitive server-managed fields from modification.

PoC

The issue can be reproduced by identifying a synced transaction on a non-manual link, confirming that the normal DELETE route rejects deletion, then submitting an update request that sets the transaction’s deletedAt field. The transaction will then disappear from normal listing views even though direct retrieval still shows the record as soft-deleted.

Impact

  • Type: Authorization bypass / integrity violation
  • Who is impacted: Authenticated tenant users and any deployment relying on synced transaction immutability for non-manual links
  • Security impact: Attackers can hide or effectively delete protected imported transactions that should not be deletable, compromising transaction history, bookkeeping integrity, and trust in audit-relevant server-managed fields
  • Attack preconditions: The attacker must be authenticated and able to access a synced transaction within their own tenant/account scope
Record
GHSA-hqxq-hwqf-wg83
CVSS 3.1
5.7 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N
Weakness
CWE-285
Updated
2026-11-02
OSVGO-2026-5434 No score

monetr: Protected Transactions Deletable via PUT in github.com/monetr/monetr

monetr: Protected Transactions Deletable via PUT in github.com/monetr/monetr

Record
GO-2026-5434
Updated
2026-11-02
OSVopenSUSE-SU-2026:21483-1 No score

Security update for govulncheck-vulndb

This update for govulncheck-vulndb fixes the following issues:

  • Update to version 0.0.20260723T184607 2026-07-23T18:46:07Z (jsc#PED-11136).

Go CVE Numbering Authority IDs added or updated with aliases:

  • GO-2026-4730 CVE-2026-33022 GHSA-cv4x-93xx-wgfj
  • GO-2026-4761 CVE-2026-33211 GHSA-j5q5-j9gm-2w5c
  • GO-2026-5102 CVE-2026-45021 GHSA-3vcp-chfh-f6r2
  • GO-2026-5272 CVE-2026-40938 GHSA-94jr-7pqp-xhcq
  • GO-2026-5486 CVE-2026-40924 GHSA-m2cx-gpqf-qf74
  • GO-2026-5542 CVE-2026-40090 GHSA-pj97-4p9w-gx3q
  • GO-2026-5630 CVE-2026-25542 GHSA-rmx9-2pp3-xhcr
  • GO-2026-5643 CVE-2026-40923 GHSA-rx35-6rhx-7858
  • GO-2026-5675 CVE-2026-41492 GHSA-vvf7-6rmr-m29q
  • GO-2026-5711 CVE-2026-40161 GHSA-wjxp-xrpv-xpff
  • GO-2026-5746 CVE-2026-41567 GHSA-x86f-5xw2-fm2r
  • GO-2026-5749 CVE-2026-41328 GHSA-x92x-px7w-4gx4
  • GO-2026-5837 CVE-2026-44840 GHSA-q2m9-6jp9-c6mc
  • GO-2026-5929 CVE-2026-44342 GHSA-26v7-h57m-gh9m
  • GO-2026-5930 CVE-2026-33655 GHSA-6qcr-qxgr-m7fv
  • GO-2026-5933 GHSA-3g4q-2f67-2gvh
  • GO-2026-5934 GHSA-59qp-cfj3-rp64
  • GO-2026-5935 GHSA-7856-g3gv-9wq8
  • GO-2026-5936 CVE-2026-53552 GHSA-26rh-24rg-j3vv
  • GO-2026-5937 CVE-2026-53508 GHSA-2jcc-mxv7-p3f9
  • GO-2026-5938 CVE-2026-53553 GHSA-4g5x-hcwm-82jw
  • GO-2026-5939 CVE-2026-10517 GHSA-698x-9w2p-7vvp
  • GO-2026-5940 CVE-2026-53572 GHSA-6w3m-4hhp-775q
  • GO-2026-5941 CVE-2026-53487 GHSA-gvhc-wv3v-7pf8
  • GO-2026-5942 CVE-2026-46600
  • GO-2026-5944 CVE-2026-50197 GHSA-659f-rgp5-w4wf
  • GO-2026-5945 CVE-2026-6815 GHSA-rmxx-v9rj-vpvg
  • GO-2026-5946 CVE-2026-52831 GHSA-v5px-423j-pf7p
  • GO-2026-5947 CVE-2026-53649 GHSA-xqhv-chqm-fhcc
  • GO-2026-5948 CVE-2026-50554 GHSA-588f-fvcv-xhvf
  • GO-2026-5949 CVE-2026-50553 GHSA-rqrh-8wpv-x7hh
  • GO-2026-5950 CVE-2026-53602 GHSA-339v-266x-79xr
  • GO-2026-5951 CVE-2026-10219 GHSA-6jm8-4fhr-5w64
  • GO-2026-5952 CVE-2026-49834 GHSA-9vcr-p3rj-q5q6
  • GO-2026-5953 CVE-2026-9094 GHSA-c9w5-qp6m-m395
  • GO-2026-5956 CVE-2026-55252 GHSA-h5g6-xmh4-hc37
  • GO-2026-5957 CVE-2026-54158 GHSA-5xfx-xj4h-5p7r
  • GO-2026-5958 CVE-2026-54068 GHSA-gcm7-57gf-953c
  • GO-2026-5959 CVE-2026-54072 GHSA-h29v-hj44-q8cv
  • GO-2026-5961 CVE-2026-54069 GHSA-hvr9-72v2-fff3
  • GO-2026-5962 CVE-2026-54088 GHSA-m93h-4hw7-5qcm
  • GO-2026-5963 CVE-2026-54067 GHSA-mvjr-vv3c-w4qv
  • GO-2026-5964 CVE-2026-54066 GHSA-p4m3-mgmm-c664
  • GO-2026-5965 CVE-2026-54070 GHSA-w7cg-whh7-xp28
  • GO-2026-5966 CVE-2026-54089 GHSA-xqp3-jq6g-x3qm
  • GO-2026-5967 CVE-2026-50551 GHSA-56mp-4f3v-fgj2
  • GO-2026-5968 CVE-2026-54174 GHSA-fpg8-7664-jc5q
  • GO-2026-5969 GHSA-g936-7jqj-mwv8
  • GO-2026-5970 CVE-2026-56852
  • GO-2026-5973 CVE-2026-54250 GHSA-jxr7-mqhw-9p98
  • GO-2026-5974 CVE-2026-44300 GHSA-wmj8-9953-vff5
  • GO-2026-5975 CVE-2026-50018 GHSA-42j2-w334-qxw7
  • GO-2026-5976 CVE-2026-50141 GHSA-g7mm-9vx7-jm7h
  • GO-2026-5977 CVE-2026-50013 GHSA-qrh4-p6v4-mrfg
  • GO-2026-5978 CVE-2026-50125 GHSA-qw5r-ppcg-f8rj
  • GO-2026-5979 CVE-2026-50006 GHSA-xrcf-6jh3-ggvx
  • GO-2026-5980 CVE-2026-50158 GHSA-2c7f-fxww-6w6c
  • GO-2026-5981 GHSA-mqxv-9rm6-w8qc
  • GO-2026-5982 GHSA-pqg7-v6wh-3pfp
  • GO-2026-5984 CVE-2026-53604 GHSA-2p2f-px33-4vv5
  • GO-2026-5985 GHSA-7rx3-5wx3-5v76
  • GO-2026-5986 CVE-2026-61699 GHSA-cm26-5974-52h8
  • GO-2026-5987 CVE-2026-55513 GHSA-g4x6-jcvr-9m3g
  • GO-2026-5988 CVE-2026-54628 GHSA-hwrq-8wxh-q4xv
  • GO-2026-5989 CVE-2026-55512 GHSA-m3cx-mwpg-32jg
  • GO-2026-5990 CVE-2026-54629 GHSA-mf78-3rpf-r784
  • GO-2026-5991 CVE-2026-53603 GHSA-q4vm-pq3q-8wgq
  • GO-2026-5992 CVE-2026-61549 GHSA-qf34-295c-26v8
  • GO-2026-5996 CVE-2026-54450 GHSA-pph6-vfjv-vpjw
  • GO-2026-5997 CVE-2026-54452 GHSA-xgch-x3mx-cm3c
  • GO-2026-5998 CVE-2026-54495 GHSA-398h-7f66-3h4p
  • GO-2026-5999 CVE-2026-10814 GHSA-jh6h-v6mp-h22v
  • GO-2026-6002 CVE-2026-58196 GHSA-pr64-jmmf-jp54
  • GO-2026-6003 CVE-2026-53714 GHSA-22xc-xg2r-9j7v
  • GO-2026-6004 CVE-2026-52833 GHSA-3v79-m2cg-89ww
  • GO-2026-6005 CVE-2026-53715 GHSA-8fv2-88gg-hm7q
  • GO-2026-6006 CVE-2026-53716 GHSA-cxpq-8v7q-cg56 *…
Record
openSUSE-SU-2026:21483-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
github.com/monetr/monetr
Go
 through 1.12.2
1.12.3
github.com/monetr/monetr
Go
 before 1.12.3
1.12.3
govulncheck-vulndb
openSUSE:Leap 16.0
From an advisory covering 1734 CVEs
 before 0.0.20260723T184607-160000.1.1
0.0.20260723T184607-160000.1.1

History

History
RecordedChangedSources
affected, facts
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-39901 is a medium vulnerability (CVSS 5.7) in Monetr, published April 8, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.30%, the 23rd percentile. Fixed in github.com/monetr/monetr 1.12.3.

References

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