The Gitea web handlers for adding and removing reactions on issues and comments did not refuse locked issues for users without write access, although the API did. A signed-in user who could read an issue could therefore add or remove reactions on a locked issue and its comments, bypassing the interaction restriction of the lock. Only reactions were affected; no content could be changed.
CVE-2026-107686
MEDIUMPre-NVD 4.34.3Trending — 3 sources updated this week
EchelonGraph scoreMEDIUM confidence
“—” beside the score: it is equal to the CVSS score beside it.
This medium-severity CVE scores 4.3 under CISA-ADP (Vulnrichment) CVSS v3.1 (NVD's own analysis pending). EPSS exploit probability: 0.2% (14th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.
Triggered by: Headline CVSS from CISA-ADP (Vulnrichment) CVSS v3.1
Sources: CISA-ADP (Vulnrichment) CVSS v3.1, EPSS
Also known asEUVD-2026-103987 (ENISA EUVD)Source: ENISA EUVD
4.3EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 4.3Exploit: None knownExposed services: Not assessed
A fix is available — apply it.
- CVSS v3
- 4.3
- EG Score
- 4.3MEDIUMmedium confidence
- EG Risk
- 19EG Risk 19/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity43% × 45%Impact severity (EG Severity): CVSS 4.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation0.2% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability0% × 15%CISA's SSVC Automatable value: no (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: A fix is available. Apply it within your standard update timelines. - EPSS PROB
- 0.2%
- EPSS %ILE
- 14th
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (4.3): severity, escalated by confirmed exploitation. This CVE's 4.3 is its impact severity (EG Severity), not escalated.
- EG Severity
- 4.3 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.CISA-ADP (Vulnrichment) CVSS v3.1 · CVSS v3.1
- EG Likelihood
- 0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-28). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.
A fix is available. Apply it within your standard update timelines.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.
The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
October 18, 2026
Last Modified
October 29, 2026
Advisory Details (5)
Auto-updated Oct 19, 2026Patch available. Sources: github, github_pr, github_release.
GitHub release Patch Available
v28.2.0
Patch available: go-gitea/gitea v28.2.0
https://github.com/go-gitea/gitea/releases/tag/v28.2.0GitHub pull request
fix: add missing checks to several handlers and models (#39839)
Fix merged in go-gitea/gitea PR #39847 on 2026-10-18 — awaiting tagged release
https://github.com/go-gitea/gitea/pull/39847GitHub pull request
fix: add missing checks to several handlers and models
Fix merged in go-gitea/gitea PR #39839 on 2026-10-18 — awaiting tagged release
https://github.com/go-gitea/gitea/pull/39839GitHub advisoryMentions a patch (unverified)
Locked issues and comments still accept reactions through the web UI · Advisory · go-gitea/gitea · GitHub
https://github.com/go-gitea/gitea/security/advisories/GHSA-wx44-9m3m-rjqxWeakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 26× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
- 2026-11-01 16:33 UTCEPSS rescoreEPSS 0.2% · 14th percentile
- 2026-10-31 16:31 UTCEPSS rescoreEPSS 0.2% · 14th percentile
- 2026-10-30 16:33 UTCEPSS rescoreEPSS 0.2% · 14th percentile
- 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.2% · 14th percentile
- 2026-10-29 12:23 UTCEG score recompute
- 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.2% · 14th percentile
- 2026-10-28 13:25 UTCOSV refresh
- 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.2% · 14th percentile
- 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.2% · 14th percentile
- 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.2% · 14th percentile
- 2026-10-25 14:54 UTCEG score recompute
- 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.2% · 13th percentile
- 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.2% · 13th percentile
- 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.2% · 13th percentile
- 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.2% · 13th percentile
- 2026-10-20 16:32 UTCEPSS rescoreEPSS 0.2% · 13th percentile
- 2026-10-19 21:29 UTCEG score recomputeAssessed again: 4.3 MEDIUM
- 2026-10-19 21:26 UTCNVD updateCVSS v3 → 4.3 · severity → MEDIUM
- 2026-10-19 21:12 UTCEG score recompute▼ 4.30
- 2026-10-19 21:05 UTCNVD update
- 2026-10-19 20:34 UTCEG score recomputeFirst assessed: 4.3 MEDIUM
- 2026-10-19 20:32 UTCMITRE cvelistV5CVSS v3 → 4.3 · severity → MEDIUM
- 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.2% · 7th percentile
- 2026-10-18 19:25 UTCNVD update
- 2026-10-18 19:08 UTCEG score recompute
Show 1 moreShow fewer
- 2026-10-18 19:03 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2026-107686?
CVE-2026-107686 is a medium-severity vulnerability; its CVE record was published on October 18, 2026. The Gitea web handlers for adding and removing reactions on issues and comments did not refuse locked issues for users without write access, although the API did. A signed-in user who could read an issue could therefore add or remove reactions on a locked issue and its comments, bypassing the…
When was the CVE record for CVE-2026-107686 published?
The CVE record for CVE-2026-107686 was published on October 18, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 29, 2026; the record at its source may have been updated since.
Is CVE-2026-107686 actively exploited?
CVE-2026-107686 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (14th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-107686?
CVE-2026-107686 has a CVSS v3.1 base score of 4.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-107686?
A fix for CVE-2026-107686 is available: update to the fixed version the vendor names in its advisory.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-107686
Is Your Infrastructure Affected by CVE-2026-107686?
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